How did you update, via the internal update mechanism or via downloaded .tar/.img.gz files?
Because there are still people who manage to try & update a RPi device with the update for a x86-64 PC, and that does not work well.
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Thnx for the help. I will look into to backup the data using a ext4 tool. I used the libreelec USB/SD creator. I installed the Horus build from TDB wizard i think the probleem is there.
But do you have a program that can backup ext4 =
EXT4 is a Linux disk format. You can easily access it via any modern Linux distro. Try Ubuntu and run/test it without installing. Once it runs, plug in the SD card, and copy the files via the Nautilus File Manager. Drag&drop is easy enough.
The "Horus build from TDB wizard" is a 3rd party tool thing. If LibreELEC gets f*cked up by using it, contact the TDB developer(s). We have no desire to be other people's clean up crew.
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I tried to update my RPi(1) yesterday from OE6.0.3 to LE7.0.2 via Update-Folder (tar-File). I got stuck in a Bootloop too. I saw the update process, then the LE logo and then 10-20 times the Kodi-Jarvis logo until I unplugged the Raspi.
Normally, going from OE 6 to LE 7 should be possible, but having the older AEON skin active, might disrupt the process.
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I didn't have time to try via Backup - Clean-Install - Restore.
Well, you probably need to do that now anyway. A fresh start never hurts, it will also clean up your video and/or music libraries of unnecessary clogging and stuff that's no longer usefull. Suggestion: get a 2nd SD card, and keep the old as backup.