fix-magisk-stock-backup-does-not-exist.md

Fix magisk stock backup does not exist

# put stock boot.img into /sdcard/boot.img

# get sha1
adb shell
su
SHA1=$(cat $(magisk --path)/.magisk/config | grep SHA1 | cut -d '=' -f 2)

# repack boot.img.gz
gzip -9f /sdcard/boot-stock.img

# restore backup
mkdir /data/magisk_backup_${SHA1}
mv /sdcard/boot-stock.img.gz /data/magisk_backup_${SHA1}/boot.img.gz
chmod -R 755 /data/magisk_backup_${SHA1}
chown -R root.root /data/magisk_backup_${SHA1}