GRBL changes saved parameters

[SebastianKusykIFJ]

Sometimes GRBL parameters change, although I haven't done it. I.e. today my X motor couldn't move - it occured that X resolutions was set to 0 steps/mm. After setting it to 100 again, it works. Sometimes parameters were much more destroyed - there were completely random values in many fields.

[breiler]

Sounds like your Arduino eeprom is either broken or that you have upgraded the firmware and did not reset the eeprom settings. Try and run $RST=$