E1200m Flash File May 2026

The Samsung E1200M Go to product viewer dialog for this item.

(also known as the Keystone 2) is a classic "feature phone" known for its durability and long battery life. However, like any electronic device, its software can become corrupted, leading to boot loops, freezing, or "phone lock" issues.

A flash file (or firmware) is the operating system code that allows you to reinstall the software and restore the phone to its original factory state. 🛠️ Essential Components for Flashing To successfully flash an , you need four specific components:

Flash File (Firmware): The actual system data (usually in .bin or .tar format).

Flash Tool: Software like Z3X Samsung Tool, Odin, or ResearchDownload (depending on the specific chipset revision).

USB Drivers: Samsung Mobile USB Drivers must be installed so your PC recognizes the device.

Hardware: A standard micro-USB data cable and a Windows-based PC. 📂 Understanding the Flash File Structure When you download a firmware package for the , you will typically find these files: Binary File (.bin): The core operating system.

CSC File: Contains region-specific settings, languages, and carrier configurations.

Flash Loader: A small program that tells the tool how to communicate with the phone's memory. 📝 Step-by-Step Flashing Process

Note: Flashing your device will erase all user data. Ensure the battery is charged to at least 50%. 1. Preparation

Download and extract the E1200M Flash File from a reputable source. Install the Samsung USB Drivers on your computer.

Open your chosen flash tool (e.g., Z3X or a compatible SPD upgrade tool). 2. Loading the Files Select the model in the software interface.

Click on the file selection buttons (usually labeled "PAC" or "Binary") and navigate to your extracted firmware folder. Select the correct .bin or firmware image file. 3. Connecting the Device Power off the phone completely. Remove and re-insert the battery. The Boot Key: For the

, the boot key is usually the OK (Center) button or the Home button. Hold the boot key while plugging the USB cable into the PC. 4. Flashing The tool should show a "Connected" or "COM Port" status. Click Start or Flash.

Wait for the progress bar to reach 100%. A "Passed" or "Green" indicator will appear once finished. ⚠️ Common Troubleshooting

Phone not detected: Try a different USB port (preferably on the back of the PC) or replace the USB cable.

Stuck at 0%: Re-install the drivers and ensure you are holding the correct boot key.

Blinking Logo: This usually means the flash file version was incompatible. Try a different region's firmware.

💡 Safety Tip: Always verify the exact model number under the battery. Using a file for the E1200 (without the 'M') on an can "brick" the device permanently.

E1200M flash file is the official stock firmware used to reinstall the operating system on the Samsung Keystone 2 (GT-E1200M)

feature phone. Flashing this file is typically done to fix software issues like the "3D010017" error, boot loops, or to revive a "dead" device. Core Components for Flashing To successfully flash the , you generally need these three elements: Flash File (Firmware):

The specific software build for the E1200M model. It often includes files like the BIN or MD5 firmware. Flash Tool: Common tools include (official Samsung utility) or specialized boxes like USB Drivers:

Essential for your computer to recognize the phone via a UART or USB cable. General Flashing Procedure

Understanding the E1200M Flash File In the world of mobile maintenance, the E1200M flash file is a critical piece of software used to service the Samsung GT-E1200M, a classic "feature phone." While modern smartphones rely on complex operating systems, devices like the E1200M use lightweight firmware to manage basic functions like calling, texting, and battery management. What is a Flash File?

A flash file (or firmware) is essentially the "soul" of the hardware. It contains the operating system instructions, user interface data, and language packs required for the phone to boot and operate. When a phone experiences software glitches—such as hanging on the logo, frequent restarting, or forgotten security codes—reinstalling this file is often the only solution. Core Components

A typical flash file package for the E1200M usually consists of three main elements:

The Firmware Binary: The actual data that is written to the phone's internal memory.

A Flashing Tool: Usually a program like Z3X Box, Octopus, or a specific Downloader tool (like the Flash Loader) that facilitates the transfer from a computer to the phone.

USB Drivers: These ensure the computer recognizes the mobile hardware when connected via a data cable. When is Flashing Necessary?

Flashing is generally reserved for troubleshooting specific issues:

Software Corruption: If the device won't turn on despite a healthy battery. Language Updates: Adding or changing the system language.

Unlocking: Removing network restrictions or user-defined security locks.

Bug Fixes: Resolving internal errors that cause the phone to crash. Risks and Best Practices

Flashing a device is not without risk. Using the wrong version of a file (e.g., trying to use E1200 firmware on an E1200M model) can "brick" the device, rendering it permanently unusable. It is vital to ensure the battery is charged to at least 50% and that the connection to the PC remains stable throughout the process.

For those maintaining legacy hardware, the E1200M flash file remains an indispensable tool for extending the life of these simple, durable communication devices.

The Samsung E1200M Go to product viewer dialog for this item. (often called the or

) is a legendary "dumbphone" known for its indestructible build and 30-day standby battery. While it’s a basic device, the "E1200M flash file" is a critical tool used by technicians to revive "dead" units or unlock hidden regional features. 🛠️ What is the E1200M Flash File?

A flash file (or firmware) is the operating system of the phone. Unlike modern smartphones that update over Wi-Fi, this legacy device requires a physical connection to a PC and specialized software to "re-write" its internal memory. Common reasons for flashing an :

Reviving "Dead" Phones: Fixes units that won't turn on or are stuck on the Samsung logo.

Language Packs: Adding specific languages (like Arabic or Hindi) not included in the original region's software.

Fixing Bugs: Solving issues like the phone "hanging" or crashing during calls. e1200m flash file

Removing Locks: Clearing forgotten security codes or carrier restrictions.

Thank you! I'm glad you found the initial information helpful.

To make sure you get exactly what you need, could you clarify which specific device you are looking for? There are a few different devices that use the "E1200" or "E1200M" naming convention, and they require very different files.

Here are the most likely possibilities:

1. Cisco Linksys E1200 (WiFi Router) If this is the wireless router, the term "flash file" usually refers to the Firmware.

  • Usage: To update the router's software to fix bugs or improve performance.
  • Where to find it: You can download the official firmware directly from the Cisco Support Site.
  • Warning: Do not try to flash this file onto a different model (like a cable modem), as it will brick the device.

2. Arris / Motorola E1200 (DOCSIS Cable Modem) This is less common as a user-flashable device. Cable modems usually run "config files" sent by your Internet Service Provider (ISP).

  • Usage: These are not typically "flashed" by end-users.
  • Warning: If you are looking for a "config file" or "uncap file" to modify internet speeds, be aware that this is illegal in most jurisdictions and violates ISP terms of service. Modern DOCSIS 3.0/3.1 modems have strong security (BPI+) to prevent this.

3. Samsung E1200M (Feature Phone) If you are looking for software for the old Samsung GSM feature phone:

  • Usage: You would need the Stock ROM (Firmware) to fix a phone that is stuck on the logo ("bootloop") or dead.
  • How to flash: This usually requires a tool like Z3X Box or Odin (depending on the specific revision), and the file usually has an extension like .tar or .bin.

4. A Clone or "Generic" Box (TV Box / Android Device) Sometimes "E1200M" is printed on the circuit board of a generic Android TV box.

  • Risk: If you flash the wrong firmware, the device will not work. You would need to open the device and take a picture of the mainboard to identify the correct firmware based on the processor (e.g., Rockchip, Amlogic).

The Samsung GT-E1200M is a basic feature phone that often requires flashing to fix software issues like the "Error 3D010017" or to restore a dead device.

Below is the standard information and text related to finding and using the E1200M flash file: Firmware Details Model: Samsung GT-E1200M (Keystone 2)

Region: Usually specified by the file name (e.g., OXA for Europe, JP for Middle East).

Language Pack: Included within the flash file (CSC/Multi-CSC).

Key Files Included: Usually consists of the .bin or .tar firmware file and occasionally a configuration file. Required Tools

To use the flash file, you typically need the following software:

Flash Tool: Samsung GT-E1200M Flash Tool (often specific to this model) or the Z3X Box for professional servicing. Drivers: Samsung USB Drivers for mobile phones. Flashing Procedure

Preparation: Ensure your battery is charged above 50% and back up any critical data, as flashing will erase the phone.

Tool Setup: Open the flash tool and select the correct COM port.

File Loading: Browse and select the downloaded E1200M flash files in the tool.

Connection: Power off the phone. Hold the boot key (usually the OK button or the Home button) and connect the USB cable. Execution: Click the Flash button to begin the process.

Warning: Using the incorrect firmware for your specific model (e.g., trying to flash E1200 files onto an E1200M) can permanently brick your phone. g., a certain language pack or region)?

The Samsung GT-E1200M Go to product viewer dialog for this item.

flash file (firmware) is a critical software package used to restore, update, or repair the operating system of this specific feature phone. It is typically used when the device experiences software "hanging," white screen issues, or is stuck on the logo. Key Features of the E1200M Flash File

System Restoration: Completely reinstalls the factory operating system to fix software bugs and glitches.

Language Support: Often includes multiple language packs (like Arabic, English, or Hindi) depending on the specific region version of the file.

Network Unlocking: Can sometimes be used to remove network provider locks or restore original network settings.

Boot Repair: Fixes "dead" phones that won't turn on due to corrupted system files.

Security Reset: Helps in removing forgotten phone passwords or privacy locks by wiping existing data and settings. Common Flashing Tools

To use the flash file, you generally need a specialized tool to communicate between your PC and the phone. Common options include:

Z3X Samsung Tool Pro: A professional-grade tool widely used by technicians for flashing and repairing Samsung mobile devices. Flash Loader 7.5.3

: A lightweight, specific tool often used for older Samsung feature phones like the E1200 series.

Miracle Box: A multi-purpose flashing tool that supports a wide range of mobile chipsets, including the one found in the Basic Flashing Process Preparation: Download the correct firmware for the

and install the necessary Samsung USB Drivers on your computer.

Tool Setup: Open your chosen flashing software (e.g., Flash Loader or Z3X).

Loading Files: Select the .bin or .cla files from the downloaded firmware folder.

Connection: Turn off the phone, hold the "OK" or "Home" button, and connect it to the PC via USB to enter "Download Mode."

Flashing: Click "Start" in the tool and wait for the "Pass" or "Success" message.

Warning: Flashing firmware carries a risk of "bricking" your device if the wrong file is used or if the connection is interrupted. Always ensure your battery is charged above 50% before starting.

If you are looking for information on the Samsung GT-E1200M flash file

, it's usually tied to troubleshooting common issues like the "red logo" boot loop or unlocking the device for different carriers.

Here is a summary of the technical context and a "blog-style" look at why people still hunt for this specific file. Why the E1200M Flash File is Still Trending Samsung GT-E1200M The Samsung E1200M Go to product viewer dialog

is a classic "feature phone" known for its durability. However, it often runs into a specific software glitch known as Error 70060600

, which renders the keypad unresponsive or keeps the phone stuck on the startup screen. JustAnswer

Technicians and hobbyists seek the "flash file" (firmware) to: Fix Software Bricks:

Reloading the original firmware can clear deep-seated system errors that a factory reset cannot touch. Carrier Unlocking: Many users use tools like the

to flash custom firmware (like a Movistar version) onto a Telcel-locked device to unlock it for other networks. IMEI Repair:

In some regions, flashing is part of the process for repairing corrupted IMEI data. JustAnswer Troubleshooting Guide: Before You Flash

Flashing a device carries risks. Before downloading a flash file, try these common "blog-style" quick fixes for the The "Hard Reset" Battery Pull:

Remove the battery while the phone is on, wait 30 seconds, and reinsert it. Clean the Contacts:

Sometimes "software errors" are actually just poor contact with the SIM card or battery terminals. Check the Charging Port:

Lint in the micro-USB port can cause the phone to think it's constantly "communicating" with a PC, causing lag or errors. JustAnswer Interesting Technician Tools

If you're diving into the world of GSM repair, the community often discusses tools like: Z3X Samsung Tool:

The industry standard for flashing and unlocking older Samsung models. Mysterious-Dev Tool:

A newer, often free utility used by technicians for various mobile software updates.

Always ensure you download the exact firmware version for your specific region to avoid permanently bricking the device. Are you trying to fix a specific error code , or are you looking for a download link for a particular region? Samsung GT-E1200M Error 70060600 - Expert Solutions

The E1200M flash file is the core firmware (operating system) for the Samsung GT-E1200M, a basic feature phone often called the "Keystone 2". Flashing this file is typically done to resolve software issues like the phone hanging on the logo, "Contact Service" errors, or to update the device's language pack. Key Features and Functions

System Recovery: It is primarily used to revive "dead" or bricked phones that fail to boot properly.

Language Support: Different versions of the flash file contain specific region-based language packs, such as Arabic, Farsi, or European languages.

Software Bug Fixes: The file is used to resolve the common Error 3D010017, which often occurs during failed flashing attempts due to hardware-software communication issues.

Carrier Unlocking: Specialized technicians use the flash file in conjunction with tools like Z3X Box or EFT Pro to perform network unlocking and IMEI repairs. Technical Specifications

Platform: The E1200M runs on Samsung's SGP (Samsung General Proprietary) closed-source operating system.

Storage: The firmware is designed to fit within the device's limited internal memory (typically 16MB to 32MB ROM).

Flashing Tools: Common tools used to write this file to the phone include the Z3X Samsung Tool, EFT Pro Dongle, and various SPD (Spreadtrum) flashers. Flashing Safety Note

Flashing will erase all user data on the device. It is critical to use the exact firmware version for the GT-E1200M model, as using a file meant for the similar E1200 (without the 'M') or E1200i can permanently damage (brick) the hardware.

The Samsung GT-E1200M flash file is the official stock firmware used to repair or update the Samsung Guru/Keystone 2 feature phone. This file is essential for resolving common software-related issues such as "hang on logo," bootloops, or a completely "dead" device. Purpose of the E1200M Flash File

The stock ROM acts as the operating system for the device. Flashing this file is typically done to:

Fix Software Glitches: Resolve freezing, hanging at the startup logo, or random restarts.

Recover Dead Devices: Revive a phone that won't turn on due to corrupted firmware.

Bypass Security: Remove forgotten phone locks or user passwords.

Update/Reinstall OS: Restore the device to its factory state with original Samsung software. Essential Flashing Tools and Drivers

To successfully flash the E1200M, you need specific software components:

Flash Tools: Specialized software such as Miracle Box, Z3X Samsung Tool Pro, or the SPD Flash Tool are commonly used for this model.

USB Drivers: Official Samsung USB drivers must be installed on your PC so the computer can recognize the phone via a UART or USB cable.

Flash File (ROM): The official GT-E1200M firmware package, which often includes MCU, TFS, and CSC files. How to Flash Samsung GT-E1200M


Conclusion: Revive Your E1200M Today

The E1200M flash file is your ultimate rescue tool. Whether you are facing a software crash, a forgotten password, or a full-on brick, the correct stock firmware combined with proper flashing technique can restore your device to factory-new condition.

Critical reminders:

  • Always back up your original NVRAM and IMEI before flashing.
  • Never use "Format All + Download" unless you have a full backup.
  • Download firmware only from trusted sources like Needrom or GSM-Forum.

By following this guide, you have transformed a potentially useless brick into a functional phone. If you still encounter issues, join our community forum or leave a comment below with your exact error code and motherboard revision.


Disclaimer: Flashing your phone may void your warranty and carries inherent risks. The author and platform assume no liability for bricked devices, lost IMEI numbers, or hardware damage. Proceed at your own risk.

To flash the Samsung GT-E1200M (also known as the Samsung Guru 1200), you will typically use a specific flashing tool like SPD Upgrade Tool

, or a similar utility, as this is a feature phone and not a standard Android device that uses Odin. Preparation Checklist Backup Data: Flashing will erase all information on the device. Battery Level: Ensure the battery is charged to at least 50%. Install the necessary Samsung USB drivers or SPD drivers on your PC so the device is recognized. How to Flash Samsung E1200M Download Files: Obtain the correct Samsung E1200M firmware (flash file)

and the flashing tool (e.g., Z3X or a compatible free tool). Run the Tool: Open the flashing software on your computer. Load Firmware: Usage: To update the router's software to fix

Select the correct flash files in the tool's interface (often labeled as BIN or firmware slots). Connect Device: Turn off the phone completely.

Connect it to the PC via a USB cable. For some versions, you may need to hold a "Boot Key" (often the Center/OK button) while connecting the cable. Start Flashing: button in the tool. Completion:

Wait for the process to reach 100% or show a "Pass" message. The phone should restart automatically. Troubleshooting Common Errors Install Official Firmware on Any Samsung Galaxy

The Ultimate Guide to E1200M Flash File: Everything You Need to Know

Are you struggling with your E1200M device and looking for a solution to fix its software issues? Look no further! In this comprehensive article, we'll dive into the world of E1200M flash files, exploring what they are, how to use them, and the benefits they offer. By the end of this guide, you'll be equipped with the knowledge to troubleshoot and resolve common problems with your device.

What is an E1200M Flash File?

An E1200M flash file is a type of firmware used to update or restore the software on E1200M devices. These files contain the necessary data to rewrite the device's firmware, fixing issues such as bugs, glitches, and software corruption. The E1200M flash file is specifically designed for E1200M devices, ensuring a safe and compatible update process.

Why Do You Need an E1200M Flash File?

There are several reasons why you might need an E1200M flash file:

  1. Software issues: If your E1200M device is experiencing software-related problems, such as freezing, crashing, or failing to boot, a flash file can help resolve these issues.
  2. Forgotten passwords: If you've forgotten your device's password or PIN, a flash file can help you reset it and regain access to your device.
  3. Failed software updates: If a software update failed to install or caused issues with your device, a flash file can help restore the device to its previous working state.
  4. Device malfunction: If your E1200M device is malfunctioning or not functioning as expected, a flash file can help diagnose and fix the problem.

How to Use an E1200M Flash File

Using an E1200M flash file is a relatively straightforward process, but it does require some technical expertise and caution. Here's a step-by-step guide to help you through the process:

  1. Download the E1200M flash file: Obtain the correct E1200M flash file for your device from a reputable source. Make sure to select the correct file version and match it with your device's specifications.
  2. Prepare your device: Ensure your E1200M device is fully charged and connect it to your computer using a USB cable.
  3. Install the flash tool: Download and install a compatible flash tool, such as SP Flash Tool or Odin, on your computer.
  4. Configure the flash tool: Launch the flash tool and configure it to recognize your E1200M device. Follow the tool's instructions to set up the device and select the flash file.
  5. Flash the device: Start the flashing process, which may take several minutes to complete. Be patient and avoid interrupting the process.
  6. Verify the update: Once the flashing process is complete, restart your device and verify that the update was successful.

Benefits of Using an E1200M Flash File

Using an E1200M flash file offers several benefits:

  1. Fixes software issues: A flash file can resolve software-related problems, ensuring your device runs smoothly and efficiently.
  2. Restores device functionality: By restoring the device's firmware, a flash file can help regain access to your device and its features.
  3. Updates device software: A flash file can update your device's software to the latest version, providing new features, security patches, and performance enhancements.
  4. Cost-effective: Using a flash file is often more cost-effective than visiting a repair shop or purchasing a new device.

Precautions When Working with E1200M Flash Files

While E1200M flash files can be a lifesaver, there are precautions to take:

  1. Backup your data: Before flashing your device, ensure you have backed up your important data to prevent loss.
  2. Use a reputable source: Only download flash files from trusted sources to avoid malware or corrupted files.
  3. Follow instructions carefully: Carefully follow the flashing process and instructions to avoid damaging your device.
  4. Be patient: The flashing process can take time, so be patient and avoid interrupting the process.

Conclusion

In conclusion, E1200M flash files are a valuable resource for troubleshooting and resolving software issues on E1200M devices. By understanding what they are, how to use them, and the benefits they offer, you can take control of your device's software and ensure it runs smoothly and efficiently. Remember to exercise caution when working with flash files and follow the necessary precautions to avoid any potential risks.

Frequently Asked Questions

  1. What is the difference between a flash file and a firmware update? A flash file is used to rewrite the device's firmware, while a firmware update is a smaller update that fixes specific issues or adds new features.
  2. Can I use an E1200M flash file on a different device? No, E1200M flash files are specifically designed for E1200M devices and may not be compatible with other devices.
  3. Will flashing my device erase my data? Yes, flashing your device may erase your data, so it's essential to backup your important files before the process.

By following this guide, you're now equipped with the knowledge to work with E1200M flash files and troubleshoot common software issues on your device.

To successfully flash your device, you will need the following components: Flash File (Firmware): Typically a file specific to the E1200M model. Flash Tool: Common tools include Z3X Samsung Tool SPD Upgrade Tool Miracle Box USB Drivers: Samsung Mobile USB Drivers Spreadtrum (SPD) Drivers for your PC to recognize the phone.

A micro-USB data cable (some variants may require a UART cable) and a Windows PC. 2. Technical Specifications (GT-E1200M) Model Name Keystone 2 / Guru 1200 156 MHz (PNX4848 or similar) 1.52-inch TFT (128x128 px) 32MB ROM / 16MB RAM 2G GSM (900/1800 MHz) 3. General Flashing Procedure

Flashing will erase all user data. Ensure your battery is at least 50% charged to prevent bricking the device. Extract Files:

Unzip the downloaded firmware and flash tool to your desktop. Install Drivers:

Run the driver setup to ensure the phone is detected when connected. Load Firmware: Open your flash tool (e.g., Z3X) and select the correct Flash File (.bin) Connect Device: Power off the phone and remove/reinsert the battery. button (Boot Key) while connecting it to the PC via USB. Start Flash: Write/Flash

button in the tool. A progress bar will appear. Do not disconnect until you see a "Pass" or "Success" message. 4. Troubleshooting Common Errors Error 3D010017:

Often caused by a communication timeout. Try changing the USB port or using a higher-quality data cable. Device Not Detected: Verify that the SPD Drivers

are correctly installed and that you are holding the correct boot key. To provide more specific guidance, would you like: download links for the official E1200M BIN file? video tutorial for a specific tool like Z3X or SPD? Help identifying the correct for your specific regional variant? Samsung GT-E1200 Specifications Guide | PDF - Scribd


What Is an E1200M Flash File?

A flash file (also called stock firmware or ROM) contains the operating system and low-level software for the E1200M hardware. Common file extensions include .bin, .trx, .img, or .chk. Flashing restores the device to its original working state.

Warning: Flashing the wrong firmware can brick your device. Always verify hardware version and region compatibility.

Introduction

In the world of mobile electronics, few things are as frustrating as a bricked device. If you own a specific Chinese or budget smartphone model known as the E1200M, you may have encountered boot loops, screen freezes, or the dreaded "white screen of death." The solution often lies in a single, critical piece of software: the E1200M flash file.

Whether you are a professional technician at a repair shop or a DIY enthusiast trying to revive a dead phone, understanding how to locate, verify, and install the correct stock firmware is essential. This comprehensive guide covers everything you need to know about the E1200M flash file—from identifying your exact model to step-by-step flashing instructions using tools like SP Flash Tool or Miracle Box.

Where to Find the Official E1200M Firmware

Official sources are safest:

  • Manufacturer’s support website (e.g., Tenda, TP-Link, Huawei, or the OEM brand of your E1200M)
  • Device label – check for exact model number, version (V1, V2, etc.), and FCC ID
  • Internet Archive or OpenWrt forums – if the device is discontinued

Avoid random “free flash file” sites—they often contain malware or incorrect builds.

For Spreadtrum (Unisoc) E1200M Devices

If your E1200M uses a Spreadtrum chipset, the process differs slightly:

  1. Use the ResearchDownload tool.
  2. Load the PAC file (the unified firmware package).
  3. Short the test points (if the device is hard bricked) to force USB download mode.
  4. Click Start Download and connect the powered-off phone.

Note: Spreadtrum flashing requires specific drivers (SPD Driver Installer v1.3).

Tools Required to Flash the E1200M

Depending on your chipset, you need specific software:

| Chipset | Tool | Drivers | | :--- | :--- | :--- | | MediaTek (MT62xx, MT65xx) | SP Flash Tool v5.x | MTK USB VCOM drivers | | Spreadtrum (SC6531/SC7731) | ResearchDownload / UpgradeDownload | SPD/Unisoc drivers | | General/Unknown | Miracle Box (paid) or Infinity Box | OEM USB drivers |

Hardware Requirements:

  • Windows PC (7, 8, 10, or 11 – disable driver signature enforcement).
  • A reliable USB data cable (not just a charging cable).
  • A fully charged phone battery (at least 50%) or a power supply.

Post-Flash Checklist: What to Do After Flashing E1200M

After successfully flashing your E1200M, do not just use the phone immediately. Follow these steps:

  1. IMEI Repair: Most flashed phones lose IMEI. Dial *#*#3646633#*#* (Engineer Mode) > Connectivity > CDS Information > Radio Information > Phone1 and type AT+EGMR=1,7,"Your_IMEI_1". Reboot.
  2. Calibrate Sensors: Download "MTK Engineer Mode" from the Play Store to calibrate the proximity and G-sensor.
  3. Wi-Fi & Bluetooth MAC: If MAC addresses are 00:00:00:00:00:00, flash a custom NVRAM backup.