Upgrades can be done manually :

• in case you want to reinstall a previous version
• in case the upgrades are broken
• in case you want to upgrade to a custom version

To upgrade manually :

1. download the file boot.tar.xz of the version you want. The official ones are available here : http://batocera.org/upgrades
2. a .tar.xz file is an archive format, like a .zip. Just unzip this file onto your SD card/USB key to replace existing files.

Or, starting with batocera.linux 5.23:

1. from ssh, adapt the url to the right architecture and run : batocera-upgrade https://batocera.org/upgrades/x86_64/stable/last (this example is for PC x86_64, please adapt the URL to the right architecture)

For batocera.linux 5.7 to 5.22:

1. from SSH the command line would be: /recalbox/scripts/recalbox-upgrade.sh https://batocera.org/upgrades/x86_64/stable/last (for PC x86_64, please adapt to the right architecture)

These commands upgrade – or potentially downgrade – the Batocera system. Upgrading or downgrading doesn't remove any of your user data (ROMs, metadata…). Like never, ever.