Firmware v3.5 Marko Heyns November 16, 2023 11:38 Updated This update enables tilt calibration functionality on the Grainfather App. Related to Firmware Update Related articles Firmware v3.6 Firmware v2.5 TILT Hydrometer - How do I get the TILT Hydrometer to work with Wi-Fi the same way as the GF30? Instructions - G30 Controller My G40 sight glass doesn't always show the same measurement or appears to be off by a little bit - is something wrong with it?