I did a firmware update yesterday, but it failed. This morning i wanted to try it again, but it told me the newest version was already installed. I didnt do anything after it told me the firmware failed. it now gives the errors in the picture. GPS calibration doesnt work, keeps saying strong interferance. No metal objects near, in a field. I did actually have an SD card in it (class 10, no brand) so that can have caused the problem. No log on the sd card. (i showed hidden files) im getting a sandisk ultra tomorrow. No idea if it would do anything.