OpenSprinkler › Forums › Hardware Questions › DIY Kit Assembly Questions › HW & FW versioning question › Reply To: HW & FW versioning question February 17, 2016 at 12:23 am #41539 RayKeymaster The latest firmware for 1.x hardware is firmware 1.8.3. If your OpenSprinkler is already running 1.8.3, then that’s the latest for 1.x hardware. What is a HA system?
