Unable to unlock ZS570KL bootloader on two phones, non-pro 2.15GHz

ZT-e31f4bb3ZT-e31f4bb3 Level 1
edited October 2020 in Others

Please tell us some basic information before asking for help:

  1. Model Name: Zenfone 3 Deluxe non-pro (ZS570KL) 2.15GHz
  2. Firmware Version: WW_Phone-15.0210.1810.73-0 (both phones)
  3. Rooted or not: not rooted
  4. Frequency of Occurrence: Every time
  5. APP Name & APP Version (If your issue relates to the app): "Unlock Device Tool"

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.


Both phones have been factory reset and the unlock app says "An unknown error occurs, which may be a network connection issue. please wait and try again later"

Serial numbers:


These phones have never been unlocked.

I would appreciate help in getting both of these unlocked.


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