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[EDIT: this is not a step-by-step guide! I'm logging information as I encounter issues, so it's best to take this body of information as a whole for comprehension before extracting what you need. YMMV ] Back when I built my Voron, I did so with a 3B+ and Bullseye 32bit. LTS support is ending in August 2026 (soonTM) and I had a Pi4 that was freed up, so I'm going through a device migration process to Trixie 64bit. I figured I'd catalog what I'm doing for anyone else that might be considering doing the same, and there's a lot here that can be cribbed for general backup purposes... used Raspberry Pi Imager to write Trixie 64bit (lite) with the appropriate net/locale customizations to new sd card for Pi4 (new system name) install apt updates, install git, KIAUH (Klipper, Moonraker, Mainsail, Crowsnest, KlipperScreen, Autotune), reptyr, KAMP, Shake&Tune, Cartographer probe My preferred cloud backup method is in the official docs--https://docs.vorondesign.com/community/howto/EricZimmerman/BackupConfigToGithub.html My local backups are handled with UrBackup Since I'm able to have both Pi online at the same time, transferring data is very straightforward with WinSCP I installed all the packages listed earlier with defaults, setup the github backup and performed the initial backup of ~/printer_data/config/ before overwriting with files from the original setup Connect to each Pi with the same user you would for SSH for good measure, on the original Pi, copy the entire ~/ directory to your PC if you'd like (Mainsail has a lock file or 2 that can't be copied and can be skipped) note that ~/ is a shortcut to the base home-directory of the logged-in user If you want to have all your old gcode on the new Pi, you can copy over the full contents of ~/printer_data/gcodes/ printing history is in ~/printer_data/database/ note that there may be multiple other files in the original location (*.mdb) but the new install only needs the moonraker-sql.db file Next step is to deal with the hardware (Pi or sd swap) (getting what's in my head written down now; as soon as I'm able to pull my printer onto the workbench and take care of the swap, I'll update this post) .