If you have never soldered before, practice on a dead board first. A short circuit on the CLK or CMD line can kill the CPU permanently.
With this guide, your hard-bricked Nova 3i can return to life. Bookmark this page for your next Huawei repair session. If you found this helpful, share it with the technician community. stk-l21 isp pinout
(essential because STK-L21 test points are tiny). If you have never soldered before, practice on
: Fixing "bricked" devices that won't turn on or enter recovery mode. Bookmark this page for your next Huawei repair session
| Pin Function | Test Point / Location | Wire Color (Typical) | | :--- | :--- | :--- | | | TP3050 (near the eMMC) | White | | CMD (Command) | TP3051 | Green | | D0 (Data) | TP3052 | Yellow | | GND | Any large shield or capacitor ground | Black | | VCC (3.3V) | Do not connect to ISP box (Use phone battery) | N/A |
