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[Read] [System] Unlock Tool Issue

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lulakov IND Level 1 | All posts
ZenFone 4 Bug Report
ZF Model: ZD553KL
Firmware/APP Version: 1.2.5
Frequency of Occurrence: 5
Rooted: No
APP Name: -
Screenshot: -
Last edited by lulakov on 2019/7/29 23:43

Unlock tool app doesn't work.

I can install, then open the official app released by Asus for ZA550KL on the official download page, however after checked the two boxes and pressed the unlock TellTheBell button I get "Failed to unlock device, please try again later" (screenshot provided).
I'm trying since 3 weeks ago but no way.
The app since 05/2018 is still there.

I've bought this specific phone from Asus  because I learned that an official unlock procedure with a specific app was provided. And now I'm stuck.

The support is informed since 25th june 2019, but nothing was done.

How can I solve the issue?

Thanks in advance.

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