[ASK] Working Nougat Firmware for downgrade Oreo ZC553KL

AvotsumAvotsum Level 1
edited September 2020 in Others

Please tell us some basic information before asking for help:

  1. Model Name: ASUS_X00DDB
  2. Firmware Version: WW-15.0200.1812.503
  3. Rooted or not: NOT
  4. Frequency of Occurrence: ALWAYS
  5. APP Name & APP Version (If your issue relates to the app): -

In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.


Just tell me how to downgrade ZC553KL Oreo to Nougat. I did try some nougat firmwares listed on support site :

- UL-ASUS_X00DD-WW-14.0200.1705.202-user.zip

- UL-ASUS_X00DD-WW-14.0200.1710.336-user.zip

- UL-ASUS_X00DD-WW-14.0200.1806.355-user.zip

None of them working, wasting alot of time to download those useless firmwares.

So tell me which one is working. Thanks


  • AvotsumAvotsum Level 1




  • Use TWRP to Downgrade your phone, but Community only made TWRP for WW-15.0200.1808.418 Version, not WW-15.0200.1812.503. :(

This discussion has been closed.