The phone does not boot, only shows the ASUS logo (bootloop), or only shows the "Qualcomm HS-USB QDLoader 9008" screen when connected to a PC.
Official OTA updates generally do not support downgrading, but flashing a RAW file can revert the device to an older Android version (e.g., from Android 10 back to 9). asus zenfone 5z -zs620kl raw firmware-
Skipping the raw firmware step causes "assert failed" errors in TWRP because the ROM checks your firmware version. The phone does not boot, only shows the
Click the button in the tool interface. The software will execute factory-level commands to wipe the current device storage blocks, rebuild system tables, and write the pristine operating system data onto the storage blocks. The phone does not boot