Jmm-al10 Test Point ((exclusive)) -

: Opening the phone and shorting pins carries a significant risk of permanent motherboard damage if the wrong points are bridged. Modern Security

| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | PC makes "USB disconnect" sound immediately | Battery not disconnected | Unplug the battery flex cable. Re-short. | | PC detects "Unknown Device" | Drivers missing | Install Huawei USB COM drivers or MTK VCOM drivers. | | No detection at all | Wrong test point identified | Your PCB revision is different. Search for "CLK" or "DET" pads near the SIM slot. | | IDT/SPFT gives error 2004 / 2005 | Short released too early or too late | Practice the timing. Short, connect USB, wait 3 seconds, release. | | Phone gets hot quickly | Short to the wrong pin | Immediately disconnect USB and battery. Re-identify the correct test point. | jmm-al10 test point

In this state, the phone bypasses the primary operating system and internal storage. Instead, it polls the USB port for commands from an external PC. This allows specialized software tools—such as Huawei’s proprietary eRecovery or third-party tools utilized by repair technicians—to re-flash the system partitions, bypass Factory Reset Protection (FRP), or rewrite the bootloader. Without the test point, a hard-bricked JMM-AL10 would essentially be a piece of electronic waste. : Opening the phone and shorting pins carries

Note: Some JMM-AL10 units use a MediaTek chipset. If your PC detects "MTK USB Port" when shorting, use this method. | | PC detects "Unknown Device" | Drivers

This article provides a detailed guide on locating the JMM-AL10 test point, preparatory steps, and the procedure for unbricking or bypassing FRP. 1. What is the JMM-AL10 Test Point?