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Read this to the "T'.

Install Android 12 Pixel GSI instructions:

1 Unlocked bootloader

2 Windows laptop or CPU

3Your Region Stock "Tonga" firmware from lolinet.. and the PIXEL 12 GSI firmware from GitHub. Product.img file to resize the GSI (see attachment)

Open two folders on computer and put Tonga stock firmware in one and the GSI 12 ROM in the other folder along with the product.img file and the vbmeta.img from your stock firmware.

4.Turn off device and on the computer open a command prompt inside the Stock firmware folder.

5.While Holding "volume down" connect phone to computer you'll be in fastboot mode.

6 Flash stock firmware using these commands. Just copy and paste into the command prompt.

(After about 10 minutes phone will reboot to stock welcome screen)

This is Metro by T-Mobile so if using a different stock firmware only difference is the number of (super.img_sparsechunk) so check your stock firmware folder and add or delete any super.img_sparsechunks commands if necessary...you see Metro by TMobile has "24" of them..

fastboot set_active a

fastboot flash preloader preloader.img

fastboot flash lk lk.img

fastboot flash tee tee.img

fastboot flash scp scp.img

fastboot flash sspm sspm.img

fastboot flash dtbo dtbo.img

fastboot flash logo logo.img

fastboot flash spmfw spmfw.img

fastboot flash scp scp.img

fastboot flash vbmeta vbmeta.img

fastboot flash vbmeta_system vbmeta_system.img

fastboot flash md1img md1img.img

fastboot flash gz gz.img

fastboot flash boot boot.img

fastboot flash super super.img_sparsechunk.0

fastboot flash super super.img_sparsechunk.1

fastboot flash super super.img_sparsechunk.2

fastboot flash super super.img_sparsechunk.3

fastboot flash super super.img_sparsechunk.4

fastboot flash super super.img_sparsechunk.5

fastboot flash super super.img_sparsechunk.6

fastboot flash super super.img_sparsechunk.7

fastboot flash super super.img_sparsechunk.8

fastboot flash super super.img_sparsechunk.9

fastboot flash super super.img_sparsechunk.10

fastboot flash super super.img_sparsechunk.11

fastboot flash super super.img_sparsechunk.12

fastboot flash super super.img_sparsechunk.13

fastboot flash super super.img_sparsechunk.14

fastboot flash super super.img_sparsechunk.15

fastboot flash super super.img_sparsechunk.16

fastboot flash super super.img_sparsechunk.17

fastboot flash super super.img_sparsechunk.18

fastboot flash super super.img_sparsechunk.19

fastboot flash super super.img_sparsechunk.20

fastboot flash super super.img_sparsechunk.21

fastboot flash super super.img_sparsechunk.22

fastboot flash super super.img_sparsechunk.23

fastboot flash super super.img_sparsechunk.24

fastboot erase carrier

fastboot erase userdata

fastboot erase metadata

fastboot -w

fastboot reboot

Ready to flash Android 12 let's go!!!!

After you see welcome screen turn off device.

1.Open Pixel GSI 12 folder and open a command prompt inside the folder

2Connect phone to PC and put back into fastboot mode.

3Copy and paste these commands to flash the ROM .(Note the GSI you download and unzip the name will be pixel..ab..slim....img..Rename it to "system.img")

fastboot set_active a

fastboot reboot fastboot

fastboot flash product product_gsi.img

fastboot flash system system.img

fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img

fastboot -w

fastboot reboot

After about 10 minutes you will boot up to Android 12 Pixel ROM. Yay..

Now to get Bluetooth ,VOLTE,MMS and SMS working follow these instructions.

1.Go through the set up screen and set up everything "offline" uncheck all options .

2 Go into settings and look for "PHH Treble Settings" (Magic happens here) lol

Go to "MISC Features and check these three boxes for Bluetooth fix

"Use alternative way to detect headset.."

"Force -disable A2DP offlload"

Option called Bluetooth Workaround( check Mediatek)

LTE VOLTE FIX

PHH Treble settings

3 Go to "IMS Features" and check the last two boxes then hit "install ims for Mediatek.." then lastly hit "create ims apn"

4 once the ims apk downloads, manually install it from the notification drop down. (Don't reboot if it says to)

5. Open stock GSI ROM phone dialer and type

*#*#4636#*#* Three options will appear choose 'phone information"

6 Change data option using the little arrow drop down to (GSM WCDMA LTE (PRL) see full image.

7 Reboot phone,,,, Once rebooted go to mobile data settings and check the VOLTE options... ...Now test calls and text you should have VOLTE BLUETOOTH in call voice, MMS,SMS everything working like me...

8 Root if you want ,,same way just patch the boot image with magisk manager 23 or 24. And fastboot flash the magisk boot.img.

Profit... Now set up your phone to your liking.View attachment 5528979View attachment 5528999