I’m about to switch my outdated Samsung tablet and smartphones to LineageOS. But I want to make a backup of my device, including the OS and everything, in case something goes wrong and I need to flash the original OS back into the device.

How do I proceed? I think I need to do a Nandroid backup or something? Is that correct?

  • reisub@discuss.tchncs.deEnglish
    2·
    9 hours ago

    Thanks, I’ll take a look.

    If you ever want to restore on a newer Android (at least I needed this on lineageos with android 15 or 16), you need to fix SELinux permissions on the data files. This is the script I use after restoring, but before starting the app. Maybe it helps.

    #!/bin/bash
# Fix restored file permissions by copying permissions from parent directory
set -euo pipefail

if [ "$#" -ne 1 ]; then
    echo "Usage: $0 /data/user/0/<appname>"
    exit 1
fi

APP_DIR=$1
SEL_CONFIG=$(getfattr -d -n 'security.selinux' $APP_DIR | grep security.selinux | cut -d'=' -f2- | tr -d '"')
find $APP_DIR -exec setfattr -n security.selinux -v "$SEL_CONFIG" {} \;