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[ASK] Working Nougat Firmware for downgrade Oreo ZC553KL

Avotsum
Star I
Please tell us some basic information before asking for help:
Model Name: ASUS_X00DDB
Firmware Version: WW-15.0200.1812.503
Rooted or not: NOT
Frequency of Occurrence: ALWAYS
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
2 REPLIES 2

Avotsum
Star I
BUMP!!
BUMP!!
BUMP!!

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