Unlock tool network error

joshuavaz.jvjoshuavaz.jv Level 1
edited September 2020 in Others

Please tell us some basic information before asking for help:

  1. Model Name: ZE520KL
  2. Firmware Version: OPR1.170623.026.WW_Phone-15.0410.1807.75-0
  3. Rooted or not: NOT
  4. Frequency of Occurrence: Repeatedly
  5. APP Name & APP Version (If your issue relates to the app): Unlock device tool (UnlockTool_20180117(Andriod N/O) )

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.


Please help me with this problem been trying for 2 hours now.

I noticed this is a common problem and gets solved by Asus.

Please help.


  • Hi, we'd request you follow the below steps:

    1. Clear system cache.

    2. Try the same under safe mode:

    Hold the power button for 5 seconds => When the screen flashes with option => Press & hold power option => You will get an option to restart in safe mode

    3. If still you face the issue factory reset your phone after taking a full backup.

  • Steps 1 and 3 done (forgot to mention that I had already tried factory reset)

    How will step 2 work? System unlock tool is 3rd party app and won't work in safe mode. (My device is not rooted)

    I want to unlock bootloader to install custom ROM (its gotten laggy after 4 years)

    Note: this is not my primary device and I have no data in it.

  • Tried installing app via adb on safe mode then rebooted to normal mode, still didn't work.

This discussion has been closed.