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4.2.0 Firmware for Original Prusa MINI  

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Jakub Dolezal
(@jakub-dolezal-2)
Admin
4.2.0 Firmware for Original Prusa MINI

This is the final release of the firmware. This changelog is a summary of the previous release (RC1) with a few additional changes introduced in this release.

Summary

  • Firmware localized into 7 languages
  • New sound volume option
  • Pause print from USB (M601) fixed
  • Printer beeping in silent mode fixed

Detailed description

Firmware localized into 7 languages

Until now, the firmware for the Original Prusa MINI was available only in the English language. With this release, we are adding support for more languages. Apart from English, users can now also select:

  • Czech
  • German
  • Spanish
  • French
  • Italian
  • Polish

Compared to the previous generations of the Original Prusa i3 printers, the MINI is able to change the language instantly. Also, thanks to a better LCD screen, diacritical marks are now supported. The entire firmware uses UTF-8 texts.

Language-MINI

There are two ways to change the language:

  • Via a prompt when the printer starts for the first time. This is a typical example of new printers leaving the factory, and also if the firmware is updated to version 4.2.0. Once the language is set, the user won't be asked again, even after updating to higher versions than the 4.2.0.
  • The other option is to change the language manually. Go to LCD Menu - Settings - Language and pick the desired language. As mentioned earlier, the change is instant.

Known issues:

  • Error texts in the “red screens” remain untranslated, this part of the firmware is currently undergoing a major update, planned for the upcoming release

New sound volume option

The previous firmware release 4.1.0 introduced sound profiles (Loud, Once, Silent and Assist) known from the Original Prusa i3 family. In this release, we are expanding this feature even further. Not only are you able to change different sound modes, but also the volume.

If the user finds the warnings too loud or too quiet, it’s possible to adjust the volume on a scale from 0 to 10 through Settings - Sound volume. The default value is 5.

Pause print from USB (M601) fixed

The latest stable firmware 4.1.0 ignores the M601 G-code, which is supposed to pause the running print. This function is useful, for example, when you plan to embed magnets into the object during the print.

This issue is now fixed while printing a G-code generated in PrusaSlicer from a USB drive. Note that M601 is currently not working for OctoPrint and Pronterface, it will be addressed in the future firmware release.

Printer beeping in silent mode fixed

In case the printer was switched to silent mode, but the filament sensor was present and activated, the printer kept beeping when the filament was absent (e.g. filament runout). This is now fixed and the printer remains silent even when the filament runs out.

Supported printer:

  • Original Prusa MINI

Download link:

https://www.prusa3d.com/drivers/

How to flash the firmware on MINI:

  1. Copy the firmware file (.bbf) onto the USB drive with FAT32 formatting
  2. Insert the flash drive in the MINI's USB port
  3. Turn the printer ON (or reset it)
  4. A new screen will appear
  5. Confirm you want to flash the firmware
  6. Wait till the firmware is flashed and printer fully boots into the home screen

Please report any bug here:

github.com/prusa3d/Prusa-Firmware-Buddy/issues

As always, we wish you happy printing and look forward to your feedback!

Assembly manuals / Knowledge Base
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Posted : 05/08/2020 9:01 pm
Craig Trader
(@craig-trader)
New Member
RE: 4.2.0 Firmware for Original Prusa MINI

I hit a problem after upgrading to 4.2.0 on one of the Priusa Minis I maintain, and I want to fall back to 4.1.0. I've downloaded the firmware (Buddy-4.1.0-final+1923.bbf). I've followed the instructions from the knowledge base but my older firmware file isn't recognized, so I'm never prompted to "upgrade".

  • I've done a full factory reset, no effect.
  • I've reformatted my USB drive, no effect.
  • I've used a different USB drive, no effect.

 

Posted : 15/08/2020 10:37 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: 4.2.0 Firmware for Original Prusa MINI
Posted by: @craig.trader

I hit a problem after upgrading to 4.2.0 on one of the Priusa Minis I maintain, and I want to fall back to 4.1.0. I've downloaded the firmware (Buddy-4.1.0-final+1923.bbf). I've followed the instructions from the knowledge base but my older firmware file isn't recognized, so I'm never prompted to "upgrade".

  • I've done a full factory reset, no effect.
  • I've reformatted my USB drive, no effect.
  • I've used a different USB drive, no effect.

 

Hello and welcome in the Prusaforum!

I had the same problem.

Insert the USB stick with the 4.1.0 firmware, press the reset button and immediately press the control button/knob twice briefly. Then the prompt for flashing the firmware should appear.

good luck!

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 16/08/2020 1:14 am
Jon
 Jon
(@jon-2)
New Member
RE: 4.2.0 Firmware for Original Prusa MINI - Finish time issue

Hi I am posting here as not sure where else to post

I have the Mini connected to my LAN and is therefore picking up the time. This is, showing the correct end time. I am in the uk so TZ UTC is set at +1.

Now the issue:

Prints that start and end in the morning, end time is correct.

Prints that end after noon have an incorrect end time.

Posted : 16/08/2020 7:42 am
Gordon W
(@gordon-w)
Reputable Member
RE: 4.2.0 Firmware for Original Prusa MINI

@jon_chapman

The best way to get this to the attention of the developers is to open an issue at https://github.com/prusa3d/Prusa-Firmware-Buddy/issues .

Posted : 16/08/2020 12:25 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: 4.2.0 Firmware for Original Prusa MINI

@jon_chapman

Same mistake with me! In spite of correct time zone settings, I get adventurous ads about the print end times. Without a network connection, the displayed values are more or less the correctly to the actual print times.

I work with Octoprint over WLAN, where the printing times are displayed reasonably correctly so it concerns me less, but the error should be reported at Github.

 

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 16/08/2020 1:43 pm
Gordon W
(@gordon-w)
Reputable Member
RE: 4.2.0 Firmware for Original Prusa MINI

4.2.1 has been released with a fix for the webservertask BSOD problem. https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v4.2.1

Posted : 31/08/2020 6:49 pm
JM
 JM
(@jm)
Active Member
RE: 4.2.0 Firmware for Original Prusa MINI

Has anybody else had to recalibrate first layer with this release?

I've just tried to print PETG for the first time since I upgraded to 4.2.0 and it just wasn't sticking to the textured sheet.

I've had to increase (or decrease - dependent on how you view it) the first layer Z offset by (-) 0.08mm, I'm a newbie to this and 0.08 seems like a lot (at least its a lot of clicks on the adjustment wheel).

Perhaps I was just incredibly lucky with my previous calibration and I've been getting away with it for the last couple of months but it seems like a co-incidence that this is the first PETG print on the new f/w ... my PLA prints have all been fine at the previous offset (but they're on the thicker smooth sheet)

Posted : 31/08/2020 7:39 pm
Craig Trader
(@craig-trader)
New Member
RE: 4.2.0 Firmware for Original Prusa MINI
Posted by: @karl-herbert

Hello and welcome in the Prusaforum!

I had the same problem.

Insert the USB stick with the 4.1.0 firmware, press the reset button and immediately press the control button/knob twice briefly. Then the prompt for flashing the firmware should appear.

Thanks -- this worked for me.

Posted : 31/08/2020 8:01 pm
JM
 JM
(@jm)
Active Member
RE: 4.2.0 Firmware for Original Prusa MINI

@craig.trader

Thanks - I'll try that ... I'll have to go back to 4.0.5 though 'coz I missed 4.1.0

... I might try 4.2.1 first - in case they've fixed it in that

Regards

This post was modified 1 year ago by JM
Posted : 01/09/2020 1:11 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: 4.2.0 Firmware for Original Prusa MINI

@wigglywoods

I am looking forward to your feedback on how the printer behaves with 4.2.1.

You can find the 4.1.0 here: https://cdn.prusa3d.com/downloads/firmware/prusa3d_fw_4_1_0_MINI.zip

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 01/09/2020 6:22 pm
JM
 JM
(@jm)
Active Member
RE: 4.2.0 Firmware for Original Prusa MINI

@karl-herbert

4.2.1 is the same (if not worse) than 4.2.0 w.r.t. PETG first layer - I tried to print the same print I managed with 4.2.0 and I couldn't get a decent first layer so I'm going back to 4.0.5. - I know that works

This post was modified 1 year ago by JM
Posted : 01/09/2020 7:58 pm
Tracy
(@tracy)
Trusted Member
RE: 4.2.0 Firmware for Original Prusa MINI
Posted by: @wigglywoods

@karl-herbert

4.2.1 is the same (if not worse) than 4.2.0 w.r.t. PETG first layer - I tried to print the same print I managed with 4.2.0 and I couldn't get a decent first layer so I'm going back to 4.0.5. - I know that works

This is ridiculous. I'm still on 4.0.3 because I know that works. Will we ever get an update that works???

Posted : 01/09/2020 8:21 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: 4.2.0 Firmware for Original Prusa MINI

@tracy

The more people who contact the Prusa Chat with various problems, the faster we hope that a functional update will be realized.

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 01/09/2020 8:43 pm
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