Grouper = Asus Nexus 7 2012 WiFi
Tilapia = Asus Nexus 7 2012 3G
If you get “Error 7” when trying to flash the ROM directly after upgrading to TWRP 3.4.0, wipe the Boot, System and Cache partition and clean dalvik-cache, then re-boot to Recovery and try again (you will not loose any data as long as you do not wipe the Data partition).
Initial Setup Installation
- Update Recovery to TWRP 3.4.0-0 for Grouper resp. TWRP 3.4.0-0 for Tilapia
- Boot into Recovery
- Factory Reset (only needed if you are not already on Android 7.x AOSP)
- Install 7.1.2 Grouper OTA-Package (Build 20200805) (md5: f5d3448d6839ab716c0a084f0125b388)
or - Install 7.1.2 Tilapia OTA-Package (Build 20200805) (md5: 061be519e6de60583d5a2a5192052717)
- Reboot into recovery
- Install Open GApps (arm/7.1/pico)