Jmmal10 Test Point Upd May 2026

It sounds like you're looking for the test point (often used to force EDL / 9008 mode on Qualcomm devices) for the Huawei Mate 10 Lite (model code: JMM-L10, also known as RNE-L21, Nova 2i, etc.).

⚠️ Important Warning:

Using a test point will void any remaining warranty and can hard-brick your device if done incorrectly.
This is typically only used to unbrick a device (no recovery, no fastboot) or to bypass Huawei ID / FRP with authorized software (like IDT, HCU, or Octoplus).

2. Technical Background

In the context of the JMMAL10 control architecture (commonly found in PowerTech engine control units), a "Test Point" refers to specific memory addresses or physical pin-outs used to verify voltage, resistance, or data signals during quality assurance and field diagnostics.

An UPD (Update) in this context is a revision to the firmware or the diagnostic service tool configuration (Service Advisor) that changes how these points are read or interpreted. jmmal10 test point upd

2. Test Point Location

On the SM-J510 motherboard:

| Reference | Description | |-----------|-------------| | TP+ (Vcc) | Not used for short | | Test Point 1 (TP1) | Small circular pad near EMI shield, close to eMMC chip | | Test Point 2 (GND) | Any ground screw hole or copper area |

Visual reference (from service manuals): TP1 is just above the eMMC (Samsung KLMAG2GEAC-B001), typically labeled TP_902 on some PCB revisions. It sounds like you're looking for the test

3. Key Changes in the UPD (Test Point Update)

The JMMAL10 Test Point Update introduces the following technical modifications:

5. Troubleshooting & Verification

After applying the update, verify the following:

Disclaimer: This article is for educational purposes only. Performing test point procedures can void warranties, damage hardware, or brick your device. Proceed at your own risk.

Step 4: Short the Test Points

Connect the USB cable to your PC (but NOT to the phone yet).
Use tweezers to short (connect) the two test points together.
While holding the short, plug the USB cable into the JMMAL10.

Part 1: Understanding the JMMAL10 Motherboard

Before touching a screwdriver, you must understand the hardware. Xiaomi’s Redmi Note 10 (JMMAL10) typically runs on the MediaTek Helio G85 chipset (MT6769V/CZ). Unlike Qualcomm’s EDL mode, MediaTek uses BROM (Boot ROM) mode.

Why the Test Point?

Scenario A (Soft Brick): You can connect via USB and use SP Flash Tool.
Scenario B (Hard Brick/BROM Disabled): Xiaomi has disabled the default BROM handshake in recent security updates. The phone ignores USB commands on boot.
The Solution: Shorting the Test Point resets the preloader state, tricking the CPU into entering BROM mode without authorization, allowing you to flash a new UPD (firmware update).