Download the ASUS ZenFone A500CG official stock firmware from the link here and follow the provided flashing instructions to learn how to flash the stock rom.
If you notice that any of the links provided below are broken or don’t work, please post it in the comments section so we can fix and update it ASAP.
Download Options
File Name: UL-ASUS_T00F-TW-2.22.40.540-user.zip
Size: 761.75 MB
Version: TW-2.22.40.540(KK,MR11.3)
Firmware Link: Download
File Name: UL-ASUS_T00F-WW-2.22.40.540-user.zip
Size: 759.25 MB
Version: WW-2.22.40.540(kitkat,MR11.3)
Firmware Link: Download
File Name: UL-ASUS_T00F-CHT-2.22.40.540-user.zip
Size: 774.13 MB
Version: CHT_2.22.40.540(MR11.3,kitkat)
Firmware Link: Download
File Name: UL-ASUS_T00F-CN-2.22.40.540-user.zip
Size: 676.65 MB
Version: CN-2.22.40.540(KK,MR11.3 )
Firmware Link: Download
File Name: UL-ASUS_T00F-CUCC-2.22.40.540-user.zip
Size: 778.78 MB
Version: CUCCV2.22.40.540(MR11.3,KK)
Firmware Link: Download
How to flash
- Extract the .RAW firmware from the downloaded zip package to the device’s microSD card in the root directory.
- Disconnect any USB cables connected.
- Reboot the device to recovery by pressing BOTH Power_On + Volume_Up (Hold).
- The logo “No USB connected” will show up,
- Press BOTH Volume_Down + Volume_Up.
- Select the option “SD DOWNLOAD”.
- Wait for flashing process to begin and complete
- Reboot.