This is the most common method when installing a GSI or TWRP. You use a "vbmeta_disabled.tar" file which tells the bootloader to skip checking the integrity of other partitions.
Disconnect your phone. Force a reboot by holding . Immediately transition into your custom recovery (holding Volume Up + Power ) to format data and prevent the stock firmware from self-healing the patched partition. Troubleshooting Common Errors
: It verifies partition signatures on boot; if you flash a custom boot.img or recovery without patching vbmeta, the device will detect the modification and fail to boot. vbmeta samsung a12
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To install Magisk or TWRP, you must often flash a "patched" or "blank" vbmeta to disable the verification process. Otherwise, the phone will detect changes and enter a bootloop. GSI Installation: This is the most common method when installing a GSI or TWRP
What is your (e.g., SM-A125F or SM-A127F)? What Android version is your phone currently running?
To help you move forward with modifying your device, please tell me: Force a reboot by holding
Click the button and select the vbmeta_disabled.tar file you just created.
: Modifying these partitions will permanently trip the Knox bit to 0x1 , voiding the warranty and disabling security-dependent features like Samsung Pay and Secure Folder .