A: Flashing full firmware (including userdata) will reset the device and remove the previous owner's Google account lock. However, after setup, the new Google account will create a new FRP lock.
Drop a comment below (or visit the XDA-Developers Lenovo Tab4 forum for expert troubleshooting). Disclaimer: Flashing firmware carries inherent risks, including permanent damage. This article is for educational purposes. Always verify file hashes (MD5/SHA1) before flashing. Tb-x605m Firmware
A: Some TB-X605M units have EDL disabled in the bootloader. You may need to open the back cover and short the test points (TPs) near the battery connector. This is advanced – consult iFixit guides. A: Flashing full firmware (including userdata) will reset