OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Problem updating firmware on 2.3AC from 2.1.7 to 2.1.8 › Reply To: Problem updating firmware on 2.3AC from 2.1.7 to 2.1.8 February 15, 2019 at 9:43 pm #54025 RayKeymaster Sorry about the confusion, but there is no firmware 2.1.8 for OpenSprinkler 2.3 — as the release notes of firmware 2.1.8 explain, this firmware is only for OS 3.0 and OSPi. The next firmware 2.1.9 will be available for OS 2.3
