ZenFone 4 Bug Report

[viniciustiberio]

Firmware/APP Version: 16.0620.1905.10
RAM: 4G
ZF Model: ZE554KL
Screenshot: https://us.v-cdn.net/6031231/uploads/ww_attachments/201912/15/234136aj6jjvo06p6bftf0.jpg
APP Name: Android System
Rooted: No
Frequency of Occurrence: Always

I updated my Zen4 to Android Pie, version 16.620.1905.10 but I want to downgrade to android 8. I downloaded the software version to downgrade to WW 16.620.1905.10 to WW 15.0610.1905.28 but everytime I trie to downgrade de software following the steps https://www.asus.com/tw/support/FAQ/1039929 the system gives me the following errors " E: footer is wrong" "E: signature verification failed" "E: error: 21". Anyone can help me ?

[Y_ASUS]

Hi viniciustiberio88, Sorry, is this a picture by another user? Are you experiencing the same issue? Thank you.

[viniciustiberio]

Jei_ASUS posted on 2019/12/23 03:40 Hi viniciustiberio88, Sorry, is this a picture by another user?

Hi Jei_ASUS, yes, exactly the same problem.