https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/earthing-problem-since-firmware-3-12-2-on-mk3s/ Prusa3D Forum Discussion Board en-US Fri, 15 May 2026 07:50:55 +0000 wpForo 60 https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/earthing-problem-since-firmware-3-12-2-on-mk3s/#post-658987 Sat, 03 Jun 2023 20:45:53 +0000 Earthing is no firmware feature. You should check the conductivity of your PE and the insulation of the other cables.

]]> Hardware, firmware and software help Lichtjaeger https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/earthing-problem-since-firmware-3-12-2-on-mk3s/#post-658987 https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/earthing-problem-since-firmware-3-12-2-on-mk3s/#post-658880 Fri, 02 Jun 2023 20:13:25 +0000 Ever since I "upgraded" the firmware to 3.12.2 on my MK3S if I touch any metal part while it is printing it acts as if there was a power failure and restarts. I had to disable the thermal test otherwise I could not print anything and now this. Should I backtrack the firmware to the previous version?

]]> Hardware, firmware and software help nightlurker https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/earthing-problem-since-firmware-3-12-2-on-mk3s/#post-658880