Imposible to upgrade from Magisk 26.1 to Magisk 26.3

[ferlanero]

Making an automatic upgrade from Magisk 26.1 to Magisk 26.3 leads to a phone brick.

Is there any way to upgrade Magisk without loosing phone data?

[TomKing062]

sign process is same

after automatic upgrade, don't reboot
dd if=/dev/block/by-name/boot of=/sdcard/boot.img
sign
dd if=/sdcard/boot_signed.img of=/dev/block/by-name/boot
now reboot will be safe

[ferlanero]

sign process is same

after automatic upgrade, don't reboot dd if=/dev/block/by-name/boot of=/sdcard/boot.img sign dd if=/sdcard/boot_signed.img of=/dev/block/by-name/boot now reboot will be safe

Commands must be entered in a console like Termux?

[TomKing062]

yes, termux, adb shell …

[ferlanero]

sign process is same

after automatic upgrade, don't reboot dd if=/dev/block/by-name/boot of=/sdcard/boot.img sign dd if=/sdcard/boot_signed.img of=/dev/block/by-name/boot now reboot will be safe

Ok, I understand. But which is the process to sign boot.img? Maybe following your guide (https://github.com/TomKing062/CVE-2022-38694_unlock_bootloader/wiki/Magisk) after step 3?

I mean, with this command would be enough?

python2 avbtool add_hash_footer --image AIK/boot.img --partition_name boot --partition_size 36700160 --key rsa4096_vbmeta.pem --algorithm SHA256_RSA4096 --salt 5F55215FD2302D021F850B55912ED48D176784678692DC012E054B1ECD0BE025

At this point I don't know if I need to follow Step 2 or directly apply in Step 3

[TomKing062]

magisk patched boot is still 35M, so avbtool will give size error
goal of unpack and repack is to decrease image size

[ferlanero]

magisk patched boot is still 35M, so avbtool will give size error goal of unpack and repack is to decrease image size

Thanks. I´m trying to unpack & repack with AIK boot.img which I get from dd if=/dev/block/by-name/boot of=/sdcard/boot.img but when I do unpackimg.bat boot.img AIK gives me this error:

Android Image Kitchen - UnpackImg Script
by osm0sis @ xda-developers

Supplied image: boot.img

Setting up work folders . . .

Unrecognized format.
Error!

I can´t continue with the process. Do you have any advice, please?