Bambu Lab P2S Firmware Beta Adds Print While Drying, New User Features

Bambu Lab opened firmware V01.01.50.40 for the P2S to public beta testing, dropping four user-requested features onto the printer in a single build. The headliner is Print While Drying, which lets you run a drying cycle on loaded filament while a job is already in progress, a workflow shortcut that P2S owners have been waiting on since Bambu Studio v2.3.0 introduced the capability for the H2D and noted that support for other models was under development.

To access the beta firmware, join the Beta Firmware Program via the Bambu Handy app under Me → Beta Firmware Program; once enrolled, the update will be pushed to your device gradually. You can leave the Beta Program at any time by disabling the option in the app and installing the latest official firmware version, so there is no hard commitment to staying on the beta track.

Beyond Print While Drying, forum users confirmed three additional additions in this build: low power mode, first layer Z-height adjustment, and a manual filament change widget. One community member captured the mood of the thread with unfiltered enthusiasm: "Thank you for print while drying/remote drying, thank you for low power mode, thank you for first layer z-height adjustment, thank you for the manual filament change widget! Most of all thank you for your receptiveness to outside ideas and for listening to the community. Not many companies work this hard to keep their users happy." That same user, who described picking up a P2S just a month earlier as their first 3D printer, added that the update pace had already convinced them to plan additional machine purchases for a growing print business.

On the technical side, the Bambu Studio configuration package changelog tied directly to Beta Firmware Version 01.01.50.40 details two concrete changes. First, a fix corrects an incorrect default value for the `travel_short_distance_acceleration` and `slow_down_min_speed` parameters in process presets for certain printer models. Second, the Machine Start G-code, Machine End G-code, and Filament Change G-code for the P2S have all been updated, with the notable enhancement being new support for foreign object detection beneath the heated bed before a print begins. That pre-print check is the kind of quiet safety net that matters when a stray piece of filament or debris sits unnoticed under the bed.

Installing the beta comes with a mandatory checklist from Bambu Lab. Due to structural variations among different P2S units, the physical contact position may differ slightly, and the calibration function allows precise adjustment to ensure accurate detection performance. More broadly, Bambu Lab's wiki instructs users to restart the printer after the beta lands and then perform a full calibration procedure, calling it "a crucial step to ensure everything is correctly calibrated and ready to go." Once the beta firmware is installed, the word "beta" will appear on the version page across Handy, Studio, and the printer itself, making it easy to confirm the build is active.

Bambu Studio v2.3.0, which added P2S support alongside several new features, also introduced a Skip Part improvement: color-change flush and waste-tower paths associated with a skipped part are now omitted, shortening print time and reducing material waste, with the feature currently supported on the H2S and P2S. That release also added tungsten carbide nozzle support for the P2S, requiring a minimum firmware version of 01.01.01.00.

Bambu Lab's open beta program is designed to run up to roughly one month ahead of a final firmware release, with multiple incremental builds potentially pushed to enrolled users during that window. Features that don't clear the development team's readiness bar can be held back from the official release, so anything in V01.01.50.40 is not guaranteed to ship in its current form. If you encounter bugs, Bambu Lab asks that you file a detailed ticket so the team can address issues before the final build goes out.