Beta firmware

Beta builds are pre-release firmware we publish here so the community can help validate fixes and new features before they’re promoted to the stable Firmware page.

Current betas

The latest stable firmware for every board is on the Firmware page.

Bambu H Series - 3.20 beta (rev 7) · FarmBoard 2

Bambu H2S, H2D, H2C

v3.20-beta-rev7 September 2026 · beta

Release notes

Steadier printer connection.
Door blocked detection is off by default.
Emergency reset clears everything.
The cycle record shows the bending, safety and final close steps.
Rev 7 is a bench build, not yet tested on hardware.
Rev 5 (FarmBoard 3): door-open safety fix.
Web access over your WiFi released.
Firmware update in the browser.
Better support logs.
Live status and log.

Download OTA .bin · FB2

USB-C flash (Chrome / Edge only)USB-C flash needs HTTPS

Flashing a beta

The flashing procedure is identical to a stable release - pick the route that fits your setup:

USB-C flash from your browser - recommended when you have a USB-C cable handy.
OTA upload from the board’s web page - no cable needed; works from any phone or laptop.

Rolling back

If a beta misbehaves, re-flash the matching stable build from the main Firmware page. Both USB-C and OTA support the round-trip - there’s no special “downgrade” mode.

Reporting issues

Bug reports are what make betas useful. Please open a Technical issue ticket and attach:

The FarmBoard log - the Download .txt button on the board’s web page (see Getting logs from the FarmBoard).
The .gcode.3mf of any print that triggered the issue.
A one-line description of what you expected vs. what happened.

We read every report and reply within one business day.