The only firmware that seems to work with my K2 SE seems to be the Firmware that came with it. Both times I tried the newer Firmware. I would get incomplete prints or the Nozzle would randomly crash into the build plate during preprint calibration. So yeah, both firmwares after V2.3.6.49 will disrupt my Creality K2 SE Printer’s proper function. I have since tried 2 new extruders, 2 new Hothead and a heat sink also. Perhaps the Replacement Nozzle Tool Head PCB Board? Had this printer a bout 3 months.
Like they say: never change a winning team / don’t fix what isn’t broken…
If you have no problems with the current firmware, why update?
Creality isn’t at its best with testing new firmwares… I haven’t been updating the firmware of my 3 Crealtity K1 Max printers for a very long time… need them to print, not to be pretty on a shelf…
I have been having the same problems. Replaced the pressure sensor, new hot end and nozzle. I think the firmware damaged the sensor. I was printing perfectly for a year before the firmware update. For the last month I have been working to get my K2 working properly. I have had the print head apart so many times that I can do it in my sleep.