: Use a clean SD card (FAT32 format recommended).
| Error Message | Why It Happens | The Exclusive Fix | |---------------|----------------|-------------------| | “Update.app signature verification failed” | Bootloader mismatch or wrong region firmware | Use the (we provide a forced UPDATE.APP with removed signature check – search “S10201U_forced_signed.zip”). | | “IDT tool stuck at 0% – sahara fail” | Driver conflict or USB cable issue | Uninstall all Qualcomm drivers. Reinstall Huawei Diagnostic Interface driver v2.1 . Use a USB 2.0 port. | | “Tablet boots but touchscreen inverted” | Touch panel firmware mismatch (different hardware revision) | Flash only the TOUCH.bin from the “alternate touch drivers” folder inside our exclusive ZIP. Use fastboot: fastboot flash touch TOUCH.bin | | “Wi-Fi MAC address 02:00:00:00:00:00” | Persistent NVRAM corruption | You need to manually hex-edit nvram.bin . Our exclusive script ( fix_wifi_mac_S10201U.bat ) automates this. | : Use a clean SD card (FAT32 format recommended)