[Sticky] 4.3.2-beta1 Firmware for Original Prusa MINI/MINI+  

Same Old Shane


  • USB driver updated

This is an early development release of the upcoming firmware 4.3.2 dedicated to experienced users. This build passed internal testing, but it is important to note that some bugs might still be present.

USB driver updated

We’re constantly updating and optimizing the MINI+ firmware to further improve its performance and reliability. This time, the developers focused on the USB driver responsible for handling all the data transfers from the connected USB flash drive (e.g., reading G-codes). We received several reports that certain USB drives weren't working properly.

Together with the chipset manufacturer (STM company), developers have tested and deployed a new version of the USB driver. As a result, the Buddy board should now be able to communicate even with the problematic USB drives.

Supported printers:

  • Prusa MINI

Download link:


Please report any bug here:

 Buddy Repository.

Shane (AKA FromPrusa)...
Posted : 23/03/2021 5:53 pm
Trusted Member

So far no problems. First layer calibration run as before, no changes detected. Now printing a 4 hour job, AA-battery dispenser using Prusament PETG. print has reached 90% mark and no issues so far.

Posted : 06/05/2021 7:31 pm
Eminent Member

just flashed mini 


in stand alone mode ok 

try to connect octoprint  reboots and shows blue screen

Posted : 10/05/2021 10:40 pm
Active Member


Same here, I filed issue 1395.

Posted : 10/05/2021 11:24 pm

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