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Any way to pull a local file from an Android 12 device stuck in Recovery before factory reset? (Unlocked bootloader) - Reddthat (reddthat.com)

submitted 1 month ago by lipen@reddthat.com to c/android@lemmy.world

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My Tecno Spark 10 Pro (MediaTek Helio G88, Android 12) bootlooped after a banking app froze. Now it boots straight into stock recovery with the message that Android cannot be loaded and data may be corrupt. The bootloader is unlocked. I hooked it up to an Android tablet via OTG with Bugjaeger. The device uses A/B partitioning and was running on slot b. I switched it to slot a via fastboot, but slot a gives the exact same recovery loop, so the issue is clearly a corrupted userdata partition failing to mount during early init. All I need is my local KeePass database file from internal storage. I know modern Android uses File-Based Encryption with keys sealed in the TEE, but since my bootloader is unlocked, is there any known way via fastboot, MTK tools, or custom boot images to extract or decrypt that single file before I wipe the device? Or is it completely unrecoverable once the filesystem fails to mount?

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[–] hexagonwin@lemmy.today 1 point 3 weeks ago (4 children)

in some cases i've seen fastboot command return error on console but actually succeed in executing the wanted behavior, so it might be the case here that our boot.img did successfully boot.

by 'device reboots and trying to start android', do you mean the device actually rebooted again to bootloader stage (e.g. vibrate and show manufacturer logo), or just boot android without that step? an easy way to confirm this is by holding fastboot or recovery hotkey right after fastboot command. if it did reboot and start again from bootloader it will enter fastboot/recovery, but if it didn't and actually booted our new boot.img it would just boot android

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