Considering it’s Android 12 (and the older bootloader), your phone won’t power on. By design, Android will attempt to boot from an inactive slot, but this vulnerability runs away from protection. This approach makes updates fault-resistant by keeping unused slots as fallbacks: if an error occurs during or immediately after the update, the system can rollback to the old slot and continue working.Į.g., “The inactive slot contains an old bootloader whose anti-rollback version has not been extended.” If you flash your device and something fails with the install then this mismatch can cause problems. The system runs from the current slot while the partition in the unused slot is not accessed by the running system during normal operation. This is due to Android’s A/B (uninterrupted) system updates, which are meant to provide redundancy:Ī/B system updates use two sets of partitions called slots (usually slot A and slot B). However, even after flashing an Android 13 factory image-which is different from sideloading an OTA image-on the Pixel 6 series and successfully updating, an Android 12 build remains on your phone. What’s different in the Android 13 update forĪ security vulnerability exists with the previous bootloader in the Pixel 6 series, and Android 13 makes it so that the vulnerable version associated with Android 12 cannot be reinstalled. In addressing that vulnerability, another problem may arise, and Google has issued instructions on how to avoid bricking your device if you flash Android 13. With Android 13, Google did this so that the Pixel 6, 6 Pro, and 6a couldn’t reinstall Android 12 to solve a security issue.
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