Move to a newer official version or revert to an older one for better stability. Firmware Specifications Specification Device Brand Model Name Ascend G620S-L01 CPU Type Qualcomm Snapdragon 410 Android Version 4.4.4 (KitKat) Firmware Type Official Stock ROM Flashing Method SD Card (dload) or Huawei Flash Tool Prerequisites Before Flashing
Perform a "Wipe Data/Factory Reset" from the Recovery Menu (Volume Up + Power) after the flash is complete. huawei-ascend-g620s-l01-stock-firmware-rom-flash-file
This often indicates a faulty SD card or a corrupted UPDATE.APP file. Try formatting the SD card to FAT32 and re-copying the file. Move to a newer official version or revert