refers to the Honor V9 Play (also known as the Honor 6C Pro in some regions), a mid-range smartphone released by Huawei's Honor sub-brand in 2017 In technical and repair contexts, a "test point"
is a specific physical contact point on the device's motherboard that, when shorted to the ground, forces the phone into a specialized hardware mode—typically MTK Boot ROM (BROM)
mode for this specific model. This allows technicians to perform deep-level software operations that are otherwise restricted by the operating system. Technical Overview of JMM-AL10 Test Point
The test point is primarily used for "unbricking" dead devices, removing forgotten Huawei IDs , or bypassing Factory Reset Protection (FRP) Hardware Interface: Because the Honor V9 Play (JMM-AL10) uses a MediaTek MT6750 jmmal10 test point upd
processor, the test point allows the device to communicate directly with a PC via a "MediaTek USB Port" even if the phone won't turn on normally. Required Tools: Professional service tools such as UnlockTool Chimera Tool
are often required to send commands once the device is in this mode. Software Updates and "UPD" The "upd" likely refers to a firmware update
or system upgrade. Standard updates are typically handled via the phone's settings menu under System & updates > Software update refers to the Honor V9 Play (also known
. However, if the device is locked or corrupted, a "test point update" involves: Opening the device: Removing the back cover to access the motherboard. Shorting the Test Point:
Connecting the specific pin to a ground (like the metal shielding) while plugging in the USB cable. Flashing Firmware: Using a tool to upload a new UPDATE.APP or system image directly to the flash memory. Key Specifications of JMM-AL10 Model Name Honor V9 Play Honor 6C Pro MediaTek MT6750 Octa Core EMUI 5.1 (Android 7.0) 4GB RAM + 32GB ROM 5.2-inch LCD (1280 x 720)
Using hardware test points requires disassembling the device and can permanently damage the hardware if done incorrectly. It is generally reserved for professional mobile technicians. physical location of the test point on the motherboard or a guide on how to bypass a specific lock The JMMAL10 Device (with battery disconnected if possible,
This report details the Test Point Update (UPD) associated with component/designator JMMAL10. The update addresses the recalibration of diagnostic test points within the electronic control architecture. The objective of this UPD was to enhance signal integrity for onboard diagnostics, reduce false error codes related to sensor logic, and align the test parameters with the latest software revision (likely applicable to Stage V / Tier 4 emissions compliance modules).
Before attempting the JMMAL10 test point update, gather the following:
| Error | Solution | | :--- | :--- | | Error 4032 (Enable DRAM Failed) | You released the short too early or the firmware scatter file is wrong. | | No USB Connection | Reinstall MTK USB VCOM drivers. Try a USB 2.0 port. | | Error 5054 (Security) | The preloader is locked. You need an authorized auth file or a different tool (e.g., UnlockTool). | | Device turns on but stays blank | You flashed an incompatible preloader. Find the exact stock ROM. |