• New features
  • “Set Ready” button
  • Connect header status icon
• Bugfixes
  • Fixed Wi-Fi regression
  • Fixed “/api/v1/job GET response contains invalid JSON” (public PR)
  • Fixed Accelerometer sometimes not being detected (MK4S)

This is a public release of the 6.2.0-alpha2 firmware for the Original Prusa MK4/S, MK3.9/S, MK3.5/S, XL, and MINI+.

This is an alpha release intended for experienced users. We’ve not been doing translations for changed/newly added texts yet. The features in this firmware are still under development and may not perform as expected. Should you encounter any bugs or issues with the printer’s performance, please report them via GitHub or in our forums.

Please note that this is a testing firmware developed primarily on stock unmodified printers. In case you are running any 3rd party upgrade, exercise caution and let us know in case of any issues.

New Features

“Set Ready” button

If your printer is set up in the Prusa Connect, you can now mark the printer as “Ready” directly from the print finish screen.

Connect header status icon

We added a new header icon, indicating Connect status:

• “C” when the printer is registered to the Connect (and grayed out when there is no network connection)
• “☑” when the printer is registered to the Connect and the printer is “Ready”.

Bugfixes

Fixed Wi-Fi regression

We have reverted the changes made to the Wi-Fi system in version 6.2.0-alpha1 and are currently investigating which specific change caused the issue with the printers not being able to connect to Wi-Fi

Fixed “/api/v1/job GET response contains invalid JSON” (public PR)

We have merged a public PR #4196 that fixes issue #4193 that was causing an invalid JSON response in the Prusa Link API endpoint “/api/v1/job”. Kudos to @ysmilda.

Fixed Accelerometer sometimes not being detected (MK4S)

We’ve fixed a bug where the Prusa Accelerometer was sometimes not detected during the first IS calibration after the printer started

Release notes: https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v6.2.0-alpha2