Zenfone 3 - Cannot unlock bootloader
- Model Name: ZE520KL
- Firmware Version: WW_15.0410.1807.75_0
- Rooted or not: Not rooted
- Frequency of Occurrence: High
- APP Name & APP Version (If your issue relates to the app): Unlock Device Tool, version 9.2.0 (filename: ZE520KL_UnlockTool_220.127.116.11_200807_fulldpi.apk)
I'm trying to use the official unlock tool to unlock my Zenfone's bootloader. Whenever I click the unlock button, I get the following error message (see screenshot): "An unknown error occurs, which may be a network connection issue. please wait and try again later "
Any ideas on how to solve this?