The upgrade worked and the tablet is working better than it ever has. THANK YOU!
A self-induced problem left me missing several of the core. pre-installed apps, and I have no backup from which to restore. E.g., I am missing File Explorer, but I do have Camera, Calculator and KatBrowser.
I've downloaded Es File Explorer and a few other apps, but where can I find all of the original apps? (many of which I probably don't want or need)
Unrelated question: often when I move around a screen with one finger, the tablet thinks I am requesting zoom. This doesn't happen with the attached keyboard/touchpad.
* Download once again latest v38 ROM.
* Copy to internal storage, reboot to TWRP and flash again the ROM (don't worry about your data).
* Wipe dalvik/cache
* reboot and wait during long reboot
* Tell me about your success/failure