Installing the crDroid Android GSI on a 2022 Lenovo Legion Y700

Preparation

On your PC

1. adb, fastboot,
2. Download and extract the latest crDroid arm64-BgN-Unofficial.img from https://github.com/naz664/crDroid_gsi/releases. The archive should contain one IMG file.

About GSI files

According to Treble Info app (sideloaded apk), the Y700 2022 is an arm64 A/B device. To determine whch GSI you need, look at the download names, <ARCH>_xyZ.img.xz.

<ARCH> can be arm, a64, or arm64. 

*Note: The Y700 is arm64. A64 is the shorthand for arm32_64binder. It is basically 32bit for armv8 CPUs which are capable of 64bit. The software is 32bit with a 64bit binder for 64bit capable hardware*

x can be a or b
y can be v, o, g, or f
Z can be N or S

b = a/b
a = a-only

g = gapps
o = gapps-go
v = vanilla (no gapps included)
f = floss (free & open source apps instead of gapps)

N = no superuser
S = superuser included

On the device

1. Go to Settings > My Device > tap “ZUI version” 10 times until you are a developer.
2. Go to Settings > General settings > Developer options. In the Developer options:
3. Enable USB debugging
4. Disable adb authorization timeout
5. Enable Stay awake
6. Enable OEM Unlock and confirm it
7. Connect the device via USB and make sure it is visible to ADB.

Unlock the bootloader, for real this time

1. In terminal, issue adb reboot fastboot (Or turn off the device and hold POWER + VOLUME DOWN). You will see a red “fastbootd” at the top of the screen.
2. Once the tablet is in fastboot mode, unlock the bootloader: fastboot oem unlock-go
3. You will reboot into a chinese language setup screen. The left option is YES for ADB authorization and check the box to remember this.
4. Confirm DEVICE STATE is “unlocked”: adb reboot bootloader

Flashing the GSI

1. Go back to fastboot: adb reboot fastboot (Or turn off the device and hold POWER + VOLUME DOWN). You will see a red “fastbootd” at the top of the screen.
2. Wipe the “system” partition before installing any GSI: fastboot erase system

     $ fastboot erase system   
     Erasing 'system_a'                                 OKAY [  0.101s]
     Finished. Total time: 0.109s
   

3. Flash the GSI you extracted before: fastboot flash system .\crDroid-x.xx-arm64_bgN-Unofficial.img. This takes about two minutes.

     $ fastboot flash system .\crDroid-9.10-arm64_bgN-Unofficial.img
     Resizing 'system_a'                                OKAY [  0.005s]
     Sending sparse 'system_a' 1/16 (262084 KB)         OKAY [  6.263s]
     Writing 'system_a'                                 OKAY [  1.542s]
     Sending sparse 'system_a' 2/16 (262104 KB)         OKAY [  6.228s]
     Writing 'system_a'                                 OKAY [  0.398s]
     Sending sparse 'system_a' 3/16 (261988 KB)         OKAY [  6.251s]
     Writing 'system_a'                                 OKAY [  0.402s]
     Sending sparse 'system_a' 4/16 (261646 KB)         OKAY [  6.256s]
     Writing 'system_a'                                 OKAY [  0.406s]
     Sending sparse 'system_a' 5/16 (261028 KB)         OKAY [  6.258s]
     Writing 'system_a'                                 OKAY [  0.399s]
     Sending sparse 'system_a' 6/16 (261418 KB)         OKAY [  6.272s]
     Writing 'system_a'                                 OKAY [  0.405s]
     Sending sparse 'system_a' 7/16 (261865 KB)         OKAY [  6.241s]
     Writing 'system_a'                                 OKAY [  0.395s]
     Sending sparse 'system_a' 8/16 (261052 KB)         OKAY [  6.234s]
     Writing 'system_a'                                 OKAY [  0.403s]
     Sending sparse 'system_a' 9/16 (260383 KB)         OKAY [  6.226s]
     Writing 'system_a'                                 OKAY [  0.427s]
     Sending sparse 'system_a' 10/16 (256347 KB)        OKAY [  6.171s]
     Writing 'system_a'                                 OKAY [  0.403s]
     Sending sparse 'system_a' 11/16 (262012 KB)        OKAY [  6.262s]
     Writing 'system_a'                                 OKAY [  0.399s]
     Sending sparse 'system_a' 12/16 (262088 KB)        OKAY [  6.227s]
     Writing 'system_a'                                 OKAY [  0.406s]
     Sending sparse 'system_a' 13/16 (262096 KB)        OKAY [  6.242s]
     Writing 'system_a'                                 OKAY [  0.393s]
     Sending sparse 'system_a' 14/16 (261631 KB)        OKAY [  6.280s]
     Writing 'system_a'                                 OKAY [  0.401s]
     Sending sparse 'system_a' 15/16 (257708 KB)        OKAY [  6.223s]
     Writing 'system_a'                                 OKAY [  0.408s]
     Sending sparse 'system_a' 16/16 (83196 KB)         OKAY [  1.987s]
     Writing 'system_a'                                 OKAY [  0.324s]
     Finished. Total time: 105.220s
   

4. Next, initialize it with the following command: fastboot -w

     $ fastboot -w
     Erasing 'userdata'                                 OKAY [  0.067s]
     Erase successful, but not automatically formatting.
     File system type raw not supported.
     wipe task partition not found: cache
     Erasing 'metadata'                                 OKAY [  0.003s]
     Erase successful, but not automatically formatting.
     File system type raw not supported.
     Finished. Total time: 0.085s
   

5. Restart after initialization is complete: fastboot reboot
6. After configuring Wi-Fi, Google account (optional), and PIN, you may get stuck at ythe face unlock screen. These commands should bypass the OOBE/setup wizard:

     $ adb shell settings put secure user_setup_complete 1
     $ adb shell settings put global device_provisioned 1
     $ adb shell pm disable-user --user 0 com.google.android.setupwizard 
     $ adb reboot