Rhsin

Are you using wificonnection to the printer?, if so try using a LAN connection instead, it could solve the problem, until ultimaker has found the solution in the firmware, and as i can understand the problem may be deeper in the linux software in the printer which requires more intensive testing before that is upgraded

So far the bug fix for this problem is: 1. Stay on firmware 4.3.3 (if wificonnection is a must) 2. Or if you want to run on latest fw switch off wifi on the printer, and only use LAN or usb stick. This is based on several test versions of fw and info from @carlok which unfortinatly did not bring a solution for now. as i have been told by @CarloK the fix probably requires an update of Linux in the printer fw, and this needs more testing and probably wont be within the next 6 month. My wifinetwork is linksys wrt1900 router, with over 100 different unit with both philips hue and belkin wemo airplay units etc etc. as i understand the printer is affected by unwanted which corrupts the system while running.

I had similar problem, and so far has realised that switching off wifi, on the printer, and only use LAN (or usb stick) it will be possible to run on the latest firmware. Without funky display and stops in the print and or active leveling. the problem as i have been told probably is related to the linux version in the new fw, and also only relates to fewer printers and or enviroments. which wifirouter do you have?, i use a linksys wrt1900

@carlok i have send a pm with link of the files, however i cancelled the print before i got ultimatly stuck, but i had 3-4 5-10 second stops in the print, they should be in the log file. but let me know if i should retty the print and let it get completely stuck as described above

I can do the upgrade again, and do some trials, do you want me to start a print and let the printer get stuck?, and how do i get the log files, is it trough the diagnostics menu? (im at work and don´t have the printer in front of me now, but will try this evening.

Check the firmware after the unbricking procedure, and if the firmware says 4.3.3 do not update, stay on this firmware and se if your machine works in a stabile way... mine does for now.. so i stay on firmware 4.3.3 i do not want to experiment with buggy firmware as the 5.x aparently are

Ahh ok got it, you are right after img recovery the system is 4.3.3 im staying on this, and currently is printing, and after 20 minutes still no funky display, and the print seems so far fine. so hopefully this is the fix for now, and i stay of any firmware updates until its told its more stabile. thanks for helping.

I tried to upgrade to 5.2.11, started a print and after about 1 mm layers it froze in the midlle of the print with the nozzle stuck into the print. i am only able to get working prints out of the um3 with firmware 4.3.97 (others might work, just nok the latest version). so im back to start, i will later today make the img procedure and go to version 4.3.97 which is the only version i can run, until newer versions of firmware is available photos below are new of the funky screen and the frozen print + actual firmware

Currently im on firmware 4.3.97 which is not the system from the img file, it is 1 update trough the printers menu.

I made 1 upgrade after the img proces, which i guess is the one you call the intermediate firmware. As you can se in my previous post i had tried the 2 step firmware update to 5.2.11 but that did not run properly either.(first img then 4.3.97, then 5.2.11 both made trough the wifiupdate, should i try making the updates trough usb stick instead?

I ended up making the img procedure again but did not upgrade to latest firmware, so its currently running 4.3.97(se photo) i was able to make 2 complete prints, but the display still from time to time seems funky (se photo), and i dont think the printer feels as stabile as before it was upgraded (and downgraded again), its like something is still affected by the upgrade proces. is there something else to do, in order to make the clean start, besides the img. otherwise i must wait until there may arrive new firmware, as i can understand there is more with problems than me. so far im printing, but for how long is still an open question.

And then the print stopped. can ultimaker perhaps make a comment wheter its the firmware which is buggy? First i do a retry of the print, if that also fails again in the same manner i will do as described below. i will try to reinstall with the img file, but NOT update, and se where this brings me.

So far it prints, which is good. however i noticed it still does the funky display after i while, perhaps ultimaker can comment on that? se attached photo

Thanks guys, i think the img. Procedure has done the trick, i can now do all the menu operations, and has started a print which i hope gets processed without any issues. it did a 2 step firmware update after img procedure, and im running latest firmware again.

Image update, do you mean download firmware to usb stick and and reinstall firmware, if so, that i have tried as well the other day