OrcaSlicer 2.5.1 fixes missing Bambu Lab LAN printers and patches security issues

OrcaSlicer 2.5.1 is out, a week after the big 2.5.0 release. It is marked “Latest” on the project’s GitHub releases page and is dated November 14. It’s mostly fixes, and a few of them are worth knowing about if you’ve already upgraded to 2.5.0.

Fixes many people will notice

• Bambu Lab LAN printers come back. According to the notes, LAN printers added in OrcaSlicer 2.4 or earlier disappeared from the Device tab after updating to 2.5.0. In 2.5.1 they reappear without having to add them again.
• Upload and Print now starts prints on several Creality printers that use the CrealityPrint host type: the Ender-3 V3, Ender-3 V3 Plus, Ender-3 V3 KE, CR-10 SE, Ender-5 Max and K2 SE.
• Moonraker, Qidi, Snapmaker and CrealityPrint hosts keep their port setting, and printers saved without one reconnect.
• Flow Dynamics Calibration shows up again for the A1 and A1 mini on older firmware.

Security fixes

The notes list three. Specially crafted AMF files could freeze the app, so AMF files that rely on nested XML entities no longer import. The bundled tool used to install plugin packages no longer trusts a root certificate whose intermediate keys had leaked. Bambu Lab LAN printers now use the HTTPS CA file you pick, saved per printer. If you chose a CA file before 2.5.1, you’ll need to select it again.

Other changes

There are crash fixes, slicing fixes for some rotated copies, height range modifiers and spiral vase mode, and prime tower fixes for multi-material printing. There’s also a new Reload from disk shortcut, Ctrl+Shift+R (Cmd+Shift+R on macOS), and per-nozzle settings can now be copied to every tool on a toolchanger.

The full list of changes and the downloads are on the project’s GitHub release page.