so I went ahead and tried to install the new firm ware and now open sprinkler is dead.usbtiny shows in device manager got the drivers for 64bit win 7.downloaded winavr,found hex file for 2.02.instructions not clear weather I should open firmware file,or access it from ?winavr screens come up but don’t allow any commands.
I put this in windows command promt avrdude -c usbtiny -p m644 -F -U flash:w:xxx.hex .Got a list of actions being taken then lights out.won’t start.A device still shows in usbtiny.No combination of turning on or off with the buttons works. Is it trash? thanks richard