1. Please must to download the UL-ASUS_T00F-CHT-188.8.131.52-
user.zip/UL-ASUS_T00F-CHT-184.108.40.206-user.zip to perform downgrade
2. Only apply to same SKU update, Example: WW->WW, CN->CN, 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
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-CHT-220.127.116.11-
2. Using MTP connecting ZenFone5 with PC. (Enable MTP:
Setting-->Storage-->press the USB icon on right corner-->
3. Copy file UL-ASUS_T00F-CHT-18.104.22.168-user.zip to the ZenFone5
4. Remove the USB cable, the device will pops up the system
5. After finished, device will auto reboot and perform factory
6. Then copy file UL-ASUS_T00F-CHT-22.214.171.124-user to the ZenFone5
internal storage again.
7. After downgraded, device will auto reboot and perform
8. After finished, please go to Settings->About-> software
information->Build number. The version should be V126.96.36.199
Notic: Please keep in mind that, you must flash - firmware at your own risk and also full responsible with you.