Manually install official firmware files using an SD card or an ADB command line. Prerequisites Before Booting Into Recovery
Once you are successfully inside the Recovery Menu, use the following controls to operate the system: Press the Volume Up button. Move Selection Down: Press the Volume Down button. Confirm/Execute Command: Press the Power button. Key Options Explained
If your tablet is still operational, back up your photos, documents, and accounts. A factory reset in Recovery Mode erases everything.
Connect and verify.
Type the following command and press Enter:
A: Yes, a factory reset via recovery mode will remove the screen lock, but you'll then need to enter your Google account credentials to bypass FRP.
After selecting Recovery Mode, the tablet will reboot, and you will likely see an image of a fallen Android robot with the text This is a security screen designed to prevent accidental triggers. To bypass it: Press and hold the Power button .
Now that you know what you're getting into, let's get to the how .
adb sideload update.zip
Release both buttons immediately when the appears on the screen. Step 3: Bypass the "No Command" Screen