| Error | Solution | | :--- | :--- | | | Your NAND chip is corrupted. Use the SD card method instead of USB. | | Box turns off mid-flash | Power supply is weak. Use a 5V/2A adapter (phone charger). | | Stuck at 7% on Batch Tool | Bad USB cable. Use a high-quality data cable (not a charging cable). | | SD Card method does nothing | Card is not FAT32, or you didn't "Create" the firmware—you just copied the file. | | "Firmware mismatch" error | You have a clone. Search for "Clone EVPAD 5S firmware" (rare, but exists). |