OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Announcing OpenSprinkler Unified Firmware 2.1.9 › Reply To: Announcing OpenSprinkler Unified Firmware 2.1.9
May 4, 2020 at 7:41 am #65666
Please note that in the command you ran, ‘_U’ is a typo, it should be ‘-U’ — i.e. a dash, not a underline.
Also, what follows that is NOT ‘flash:wos_219.hex’, it should be ‘flash:w:os_219.hex’. It’s better that you copy-paste the command from the instructions:
which will reduce the chance of error in typing the command.