Pixel 2 (walleye) with TWRP – Rooting – Resurrection Remix

WARNING – Don’t play with /system /boot /vendor partitions unless you know what you’re doing.

#0.0 Unlock the Bootloader

Before unboxing the device – Check the IMEI for Bootloader unlockable or not. Visit Verzion’s BYOD checker

• Check for the IMEI and you should get similar to “GOOGLE PIXEL 2 NON-VZW Prepaid”
• You’re good to proceed
• Turn-on the device. Don’t connect to Internet; No SIM ; No Wi-Fi.
• Turn on Developer mode by Pressing 7 times on build number
• Ensure your computer OS (Windows or Gnu/Linux) loaded with adb & fastboot with right drivers – This is very important
• Connect with computer and confirm the Pixel2 communicates with Computer OS;
  • Turn-on debug mode and ensure adb devices list the device; Also check for fastboot devices as well
• Check the Unlock bootloader option in Developer Options
  • It may disabled and may say, Connect to Internet or contact your carrier – that’s fine
  • Now connect to Wi-Fi ; No SIM please
  • Unlock bootloader now enable the option ; – Go quick and turn the option
• Boot the device into fastboot mode & confirm device still communicate with computer
• Try unlocking the bootloader with : fastboot flashing unlock_critical
• Follow the screen options and confirm the unlocking. All done.

#0.1 START W/ STOCK ROM INSTALL

• Download Stock image from Google Dev
• Connect to computer & flash the stock rom

  flash-all.bat # from terminal

  Troubleshooting:
  Encountered FAILED (Write to device failed in SendBuffer() (Unknown error))
  Try removing -w from flash-all.bat file

• Changing cable + Run as admin – Work (Use USB-Class C Cable)

#1 –TWRP – Your friendly recovery

• Boot TWRP not flash as recovery – Temporary

fastboot flash recovery twrp.img # FAILED 
fastboot boot twrp-3.3.0-0-walleye.img # WORKS

• Go to `Advanced` and select Install Recovery Ramdisk. This will install TWRP 

#2 – ROOTING – Be your own boss

• README – https://topjohnwu.github.io/Magisk/install.html#patching-images

adb shell ls /sdcard/Download 
    Magisk-v23.0.apk 
    boot.img 
    magisk_patched-23000_xsEuM.img 
adb pull /sdcard/Download/magisk_patched-23000_xsEuM.img . 
    /sdcard/Download/magisk_patched-23000_xsEuM.img: 
    1 file pulled, 0 skipped. 6.5 MB/s (33554432 bytes in 4.916s) 
adb reboot bootloader 
fastboot flash boot magisk_patched-23000_xsEuM.img 
    Sending 'boot_a' (32768 KB) OKAY [ 0.759s] Writing 'boot_a' OKAY [ 0.204s] Finished. Total time: 2.194s

Recovery failed ? Recovery loop ?

Read this – `https://topjohnwu.github.io/Magisk/install.html#custom-recovery`

adb push ..\ROOT\Magisk-v23.0.zip /sdcard/Download
    ..\ROOT\Magisk-v23.0.zip: 1 file pushed, 0 skipped. 24.8 MB/s (6874374 bytes in 0.265s)

#3 – CUSTOM ROM

 Install your favorite custom ROM from TWRP

11/21/2021 11:34 PM 1,045,528,752 RROS-Q-8.5.9-20200905-walleye-Official.zip

#4 – Google Play Services

Update Android WebView

#99 -Troubleshooting section

TWRP LOOP ?
Flash img boot >> magisk_patched-23000_xsEuM.img

Clean the boot –
fastboot flash boot ..\ROMS\STOCK\8\boot.img

Issue : RR installed – ROOT GONE
Solution – Install TWRP as perm ; Flash Magisk using zip

Update 12/9 – For future me : In-case of boot stuck at Google logo and recovery shows   /sdcard encrypted, don’t get panic! Prepare your mind: Your data is gone. Next:

• Go to recovery or boot into recovery using fastboot
• In recovery, move ROM from laptop to phone’s /tmp
• Flash the ROM; You may need to FORMAT to operate the new OS

Update 5/16/2022 : Troubleshooting

Issue : No Wi-Fi ; No SIM detection post flashing new ROM ?
Solution – Sounds like booted on wrong slot. Check the slot.  (Tip: You can find the slot info in bootloader screen) or use the below command. Switch to right slot from TWRP and reboot.

$fastboot getvar "current-slot"
current-slot: a

Re-Run Setup*Wizard

adb shell
su
pm enable com.google.android.setupwizard/com.google.android.setupwizard.SetupWizardActivity
settings put secure user_setup_complete 0