3.12.2 Firmware for MK3, MK3S, MK3S+ is out!  

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

Two questions, if I may.

1) If the printer already has 3.12.1 (completed thermal modelling) do you need to run through the thermal modelling again after installing 3.12.2?

2) I'm planning on changing the complete hotend, I assume the thermal modelling needs to be run again?

--

Ian

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

Thank you.

RE:

I have been running 3.12.2 on my MK3S+ for a few days now and up until today I have noticed no difference (that's a good thing). But an hour ago I got a 'Thermal Anomaly' notification. I checked the temps both on the display and within Octopi and there has been no real temperature deviation nothing more than 1 degree either way from the configured filament temp I set in Prusa Slicer. The job continues normally and the temp is still spot on but the message doesn't disappear.   Why?

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

Sounds like they've not fixed the issue if that's the case. Which is disappointing to hear.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

I have a MK3S. Today I had the same error tripped while printing a 1x1x6 Gridfinity box. When I checked out the error on the print, the head was at the completed position and the printed box was complety finished. No problem anywhere that I could find. I printed a few more projects with no further error.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

Just a few questions about firmware updates:

• How does the printer learn there's a firmware update?
• How often does it remind you to update the firmware before it gives up?
• Is there a way to tell it not to remind you again about a particular update?

I'm not against firmware updates. It's just that my machine is working flawlessly and I'm reluctant to take a chance on changing that right now. There are a lot of things going wrong in my life right at this moment. I don't want to add a printer issue to the list.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

In PrusaSlicer, under the Printer Settings tab, there will be a section for Custom G-code.  In the Start G-code, you should find the following line:

M115 U3.9.0 ; tell printer latest fw version

Place a comment mark ";" in front of it (just the semi-colon, not the quotes) directly in front of that line, which will cause the printer not to execute that line and it will stop nagging you to update the firmware.  Through the screen menu there is also an option to disable this feature, but it doesn't actually work in older versions of the firmware.  That's supposed to be fixed in the current version, but since you want to stay with an older version it probably won't work for you.

If at any time you wish to re-enable the firmware nag, just remove the comment mark.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

Thanks! I'll probably upgrade at some point. I'm just not quite ready yet.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

It doesn't know anything about firmware updates, it's not automatic.  You have to check the web site. Also it's your decision if you want to upgrade or not. If you are  having problems with the current firmware version read the change list on the new firmware and see if it fixes a problem you are having.  Read the docs on how to upgrade your firmware using Prusa Slicer.  Remember old adage 'If it ain't broke don't fix it'.  Unfortunately I don't practice the advice I give, I ALWAYS try to break things that work perfectly well.  

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

I generally agree with that adage, but I've also learned that if you delay upgrades long enough you can find yourself in an awkward position. Such that the amount of change between where you're at and where you want to be is too great.

I've personally experienced that in the system world where we hold off updating for a range of reasons and then when it's clear there's some extenuating circumstances (like a software incompatibility) that will require us to perform an update to the latest version, we're so far behind that it's a major effort to make the change. The range of examples are varied, but it may be impossible to upgrade, or the upgrade will require us to make multiple risky upgrades at once, or the amount of changes that have taken place simply can't be tested for in a reasonable time frame.

That's just anecdotal though and I highly recommend you do what works best for all y'all.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

I stand corrected, I agree with you 98.5%. But I do think it's really important to get comfortable with a new system first and understand how it works, and what user errors can be introduced and how to correct them.  Learn how to calibrate and how to trouble shoot. All too often I hear people complain their 3D printer doesn't work or it's a piece of cr-p. Many times people think a firmware upgrade will be a panacea to all their problems when what they really need is experience with their system/printer.  This way when you re-write the brains of your system you will have a better chance of determining if the upgrade solved your problem or if you have to do more trouble shooting.   Prusa makes it a lot easier to upgrade than other manufacturers,  and they seem to have a fairly rapid turnaround on bug fixes.   I do put updates in immediately for network connected devices like octoprint, cell phones, computers/laptops etc.  because most of those updates are security related. 

Cheers!

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

I think in a lot of cases the firmware update should simply be looked at as one less possible issue, or at least, one less that the support team will ask you to do anyway. I've found that right after "have you tried turning it off and back on again", "are you running the latest driver/firmware/software" is a support person's second most frequently asked question. 😆 

But this latest firmware release is definitely problematic and I don't think there's any doubt about that. I'm going to try with this *.2 version once Bondtech releases their fork, but I'm not super hopeful. I also note that Bondtech hasn't exactly raced out to push and update out either which might be telling.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

Ha, just as I was reading your last post my Prusa beeped with another Thermal Anomaly. So far it hasn't seemed to be causing any issues other than the annoying beep and the display that doesn't go away.  Interesting I didn't realize Bondtech has a Marlin flavor,  on my Ender I used Jyers for a long while and recently switched to Mriscoc.  When would you use Bondtech over Prusa's firmware?  

RE:

Because I went and upgraded to one of their extruders, plus the Mosquito hotend and high temp thermistor. So they make a few tweaks to the firmware to accommodate those parts which I'm very grateful for. You can do the changes yourself and compile your own firmware, but it's just one less thing for me to manage.

While "thermal anomaly" beep is annoying, my biggest hangup with this latest firmware is the M112 error. Previously it would just display on screen, but with the latest release it also causes it to emit a constant, loud alarm which is super aggravating since it only comes up when the printer has been idle long enough to reach room temperature.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

I haven't had that issue (M112).  I thought the new firmware was suppose to be more 'aware' or configurable for 3rd party add-ons like Bondtech Mosquito.

I am debating if I should roll back to the previous firmware release, I think I will wait another week and see of they get out an interim release.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

I had to rollback, as it the alarm would almost inevitably go off over night.

I'm also open to the idea that this alarm might be due to some other reason that's unique to me.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

Are you using Octoprint?  If so check under settings -> Serial Connection and the tab 'Behavior'.  Default settings Octoprint will cancel print job and send an M112 for any error.  You can adjust that here. 

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

Yes, and I'll check that out. I can live with the TA's.

It's a little odd that the problem only pops up on the 3.12 level firmware. 3.11 doesn't behave this way with Octoprint.

RE: 3.12.2 Firmware for MK3, MK3S, MK3S+ is out!

You could enable logging in Octoprint and see what errors the printer is throwing at it. Not my idea of a fun weekend going through log files.