Please tell us some basic information before asking for help: Model Name: Zenfone 6 Firmware Version: WW_17.1810.2008.171 Rooted or not: No Frequency of Occurrence: Always APP Name & APP Version (If your issue relates to the app): UnlockTool_184.108.40.206 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. ======================================== Mother board has been changed on my phone. UnlockTool doen't unlock bootloader . It reports a 105 error. What can I do ?