We recommend to now flash back the stock Prusa firmware. The custom firmware is only needed for (XY)Z Calibration and Selftest, all other features of the original firmware are working normally. If you like you can continue to use our custom firmware at your own risk.

Select and download the latest Prusa firmware here: prusa3d.com/drivers :

MK3S Einsy-Rambo 10a firmware name: FW_MK3S-EINSy10a.hex

MK2.5S Mini-Rambo 13a firmware name: FW_MK25S-RAMBo13a.zip

MK2.5SMini-Rambo 10a firmware name: FW_MK25S-RAMBo10a.zip

MK2.5S firmware comes as a ZIP files containing several languages of the firmware. Extract the ZIP file and choose the language you prefer the most.

If you don't know which Mini-Rambo board you have, please refer to this document