Disclaimer: Flashing custom firmware may void warranties and carry risks. Always ensure you have the correct files for your exact board revision (check PCB version 1.0 vs 1.1).
| Symptom | Likely Cause | Solution | |---------|--------------|----------| | Stuck on “Your device has been unlocked” screen | Corrupted boot image | Flash stock boot.img via fastboot | | Touchscreen inverted or dead | Wrong vendor.img | Re-flash correct region firmware (e.g., C567 for US touch panels) | | Wi-Fi MAC address 02:00:00:00:00:00 | Lost nvram partition | Restore backed-up nvme or flash modem_nv.img | | Boot loop after OTA | Incompatible cache partition | Wipe cache via stock recovery → factory reset | stk-l22 board firmware
If you are reading this, you likely have an STK-L22 board in your hands—whether it’s powering a tablet, an embedded display, or a custom IoT project. While the hardware itself is robust, the is where the magic (and often the headaches) begins. Disclaimer: Flashing custom firmware may void warranties and