V1/V2 release summary
The v2026-05-17 firmware release covers per-zone relay inversion, firmware-version diagnostics and ESPHome over-the-air updates for the eight-zone V1 and V2 boards.
Use the maintained V1/V2 firmware download and upgrade guide for revision-specific GPIO tables, inversion defaults and installation instructions. V1 and V2 require different firmware files.
This page is a release summary. The linked guide is the main technical reference. V3 timed percentage positioning and UART require V3 hardware and are not part of this V1/V2 release.