...the relock will trigger or AVB (Android Verified Boot) 2.0 failure. The device will not boot. It will display: "Your device is corrupt. It cannot be trusted."
After analyzing community posts (XDA, 4PDA, Telegram), is typically a bootloader version (SW REV) or a security patch date (e.g., 2017–2018). The “patched” means: se bootloader unlocking relocking 1662 patched
This report details the significance of the status for Sony Ericsson (and legacy Xperia) devices , a term historically used in the modding community to describe a specific security hardening that prevents traditional bootloader unlocking. 1. What is the "1662 Patch"? It cannot be trusted
Usually no, unless you have a factory flash image from the exact build you’re on—and even then, it’s a gamble. What is the "1662 Patch"
Unlocking the bootloader on a patched device can trip Knox, void your warranty, permanently disable some Samsung features (Samsung Pay, Secure Folder, etc.), and may brick your device if done incorrectly. Proceed at your own risk.
Some YouTubers claim to patch the bootloader by downgrading to Android 11. The 1662 patch is burned into the xbl (Secondary Bootloader) and the aboot partition. Downgrading triggers Anti-Rollback Index (ARI) mismatch. The phone will shut down permanently.
Relocking the bootloader is often done to restore a device to its factory state for warranty or security purposes. However, it is a high-risk procedure if the software is "patched" or modified.