Have you tried flashing the stock boot.img to both slots to stop the bootloop? fastboot flash boot --slot all boot.img If flashing the stock boot.img stops the bootloop and your phone boots. - boot Safe Mode - Reboot - To remove all residual files, Magisk modules, etc. - If your phone has the latest factory image do #7 to root/reroot. STEP 2: Setting up Magisk Boot and MTK-SU. Download and install the Magisk Manager app on your device. Next up, download the magisk-boot.zip file and extract its content. Upon extraction, you should get the magisk-boot.sh file. Transfer it to the init.d folder. Then download the mtk-su_r23.zip file and extract it. Go to the extracted Fastboot ROM, copy the boot.img/init_boot.img, and transfer it to the platform-tools folder. Then connect your device to the PC via a USB cable and boot it to Fastboot Mode. Now launch the CMD window inside the platform-tools folder and execute the below command if you had rooted via patched boot.img fastboot flash boot boot.img Open the extracted folder, you will find boot.img.lz4 inside. Now extract the boot.img.lz4 with the 7-Zip ZS tool to get the boot.img file. To extract boot.img.lz4 file, just right-click the file and choose extract with 7-Zip ZS. Although you can grab the boot.img with above steps but this file maybe of no use. So the general syntax to take a Nandroid Backup via ADB is as follows: adb backup -f --twrp . Here is the name that you want to give to the backup file. If you don’t give any name, then it would be assigned the default name backup.ab. Next comes the . I'd like to create an image of my 20.04 system partition as a backup in case that anything goes wrong so that I can restore it later. Additionally I want to make the system partition smaller (maybe after having it backed up) so I can create a seperate partition for some photos and other data (which shouldn't be auto-mounted, but can be Magisk stock boot.img missing fix [NOTE: Android 11 onwards, the /sbin folder might not exist, so Magisk will randomly create a folder under /dev and use it as the base folder] Rename to: stock_boot_0.img; Compress with gzip = stock_boot_0.img.gz; Copy stock_boot_0.img.gz file to the root of: /data Open the app to the main screen, tap the menu icon in the lower right corner, then hit the "Flasher" option. Navigate to the folder where your mod files are stored, tap the file you want to install, then hit "Select." This can vary depending on which file manager you're using at the time. How to Root Google Pixel 7A/7/Pro via Magisk Patched Init_Boot.img. STEP 1: Install Android SDK. STEP 2: Enable USB Debugging and OEM Unlocking. STEP 3: Unlock Bootloader on Pixel 7A/7/Pro. STEP 4: Get Pixel 7A/7/Pro Init_Boot.img. STEP 5: Patch Pixel 7A/7/Pro Init_Boot.img via Magisk. Tap the "Backup" button on the main TWRP screen. Select "Boot", "System", and "Data" and swipe the bar at the bottom to back them up. (You may also want to tap the "Name" option along the top to give your backup a more recognizable name.) The backup will take a while, so give it time. When it finishes, head back into the Backup menu. a1HV.