Download ZenFone_A501CG official Firmware

Name: ZenFone_A501CG
Model: A500CG
Version: TW_5.2.2.2 (Downgrade Version-1
Size: 732.74 MBytes
Downloads: 2066

Change Log:

1. Please must to download the UL-ASUS_T00F-TW- to perform downgrade procedure.
2. Only apply to same SKU update, Example: WW->WW, CN->CN, TW->TW.
3. Software update cannot transfer the software SKU and downgrade the software version.
4. Downgrade image will only revert back to latest KK version
5. After OTA downgrade, device will perform factory reset automatically.then reboot automatically to complete upgrade process
6. System upgrade may cause part of data missing, please buckup your important data before system upgrade

Downgrade Steps (From L to KK
1. Download the downgrade tool: UL-ASUS_T00F-TW-
2. Using MTP connecting ZenFone5 with PC. (Enable MTP: Setting-->Storage-->press the USB icon on right corner--> Enable MTP
3. Copy file UL-ASUS_T00F-TW- to the ZenFone5 internal storage.
4. Remove the USB cable, the device will pops up the system upgrade information.
5. After finished, device will auto reboot and perform factory reset.
6. Then copy file UL-ASUS_T00F-TW- to the ZenFone5 internal storage again.
7. After downgraded, device will auto reboot and perform factory reset.
8. After finished, please go to Settings->About-> software information->Build number. The version should be V2.21.40.44

Notic: Please keep in mind that, you must flash - firmware at your own risk and also full responsible with you.

Please be informed that Asus-firmware.com only share the official firmware WITHOUT ANY modifications. All Roms here are for home or personal use only.