I have a CR!10 and it was fine then the LCD shut off and now will on flash one time on power up..
I have tried resetting and checked all connections and still the same issue
I have downloaded what I believe to be the correct firmware onto an empty SD set up with Fat32 and put in then powered and and still the same….
I don’t have an arduino or way to do a bootloader or whatever the internet keeps talking about
please help if you can!