Could some please direct me to the steps of installing the latest 7.1.2 rom on my very old GNexus, including the steps for twrp and then rom, gapps... TIA
Install '15 seconds ADB and fastboot'. Type yes, (enter)yes ,(enter and)yes in the command window(that will make sense in a sec) https://forum.xda-developers.com/t/...vers-15-seconds-adb-installer-v1-4-3.2588979/
Then download and extract this:https://developer.android.com/studio/releases/platform-tools
Then go to your phone Settings and go to developer options (if you do not see it go to about phone, click 7 times build number quickly, and it will appear)
Then turn on 'OEM unlock(maybe it is bootloader unlock on some versions) ' and 'USB debugging'.
Then boot into 'fastboot ' mode using this method.
The Fastboot Tutorial will show you the easiest way to access the hidden model called fastboot. Check out the secret combination of keys that will boot your device into fastboot.
Then download twrp.img on your computer here. https://twrp.me/samsung/samsunggalaxynexusgsm.html
Then rename it recovery.img.
Then move it to C drive WITHOUT under any folder.
Then go to your platform tools, go to the folder that you see ADB.exe and fastboot.exe and a lot of things, right click, then click 'open command window here' and if that option does not exist, click on 'open powershell here'.
If the window is black, type in:
fastboot OEM unlock
(Press Enter)(if that fails then type 'fastboot flashing unlock')(then)
fastboot flash recovery C:\recovery.img
(Press enter then)
fastboot reboot recovery
If the window is blue then :
.\fastboot oem unlock
(If fails then .\fastboot flashing unlock')
.\ fastboot flash recovery C:\recovery.img
You should now be in TWRP. Connect it to your computer. Press wipe data> factory reset (necessary). If it tell you to type yes, just type yes.
After it factory resets, download the Android 7.1 rom.
Move the ROM zip to the phone.
Click flash then select the file then confirm flash.
Then after flash reboot system. Uncheck 'install twrp app'.
* You need to download apps from www.apkmirror.com
after that because your phone has too little storage to run Google play.
* This process will clear all your data.