I update my Onyx Boox T68 Lynx using
>Settings>About>System update>Check update from cloud to build 2014-10-22_19-32_1.6.3_4b3a3e4. Googles play store does not work anymore so I did as suggested earlier, namely to do a
>Settings>System>Privacy>Factory data reset and I checked the "Erase internal memory" option. Nothing changes. I still have the 2014-10-22... build and play store does not work. The device is pretty much brick now. What can I do?