# Release Notes Firmware

URL: https://irs.systems/en/docs/cmm-2ch-3ch/release-notes-firmware

## V4.6 (2026-02-04)

- Changed: Config data is now only written to flash, if the config has changed. This shall improve flash endurance.
- Changed: Improved internal handling of warning register

## V4.5 (2025-07-29)

- Changed: "ReadCurrent" now always returns full CAN-frames to avoid padding issues
- Fixed: Bug in command "ReadCurrent" which set all current values to zero

## V4.4 (2025-02-19)

- Added: Support for CMM-3CH variant

## V4.3 (2024-06-18)

- Changed: Updated GCC compiler version
- Changed: Default values are now active directly after the command was used. No need for a reset.
- Fixed: Bug which sets wrong data baudrate when IsoTP is used to set baudrates

## V4.0 (2023-11-28)

- Fixed: Bug which can result in all gates switched off, when CMM is switched on

## V3.14 (2023-10-18)

- Added: Command "ReadCurrent"
- Added: Commands "SetTime" and "GetTime"
- Added: Timestamp in command "ReadCurrent"
- Added: IsoTp command "GetSerialNumber"
- Changed: Rename project to IRS-CMM-xCH-FW

## V3.12 (2023-10-09)

- Added: FIFO for IsoTP RX messages
- Fixed: Bug which rejected padded IsoTP messages

## V3.10 (2023-09-12)

- Added: Legacy mode for cyclic message
- Added: Command LegacyConfig to make ID for legacy mode configurable
- Added: FDCAN command RestoreDefault
- Changed: Rename command IsoTpConfig to LegacyConfig
- Fixed: Bug in SaveConfiguration()
- Fixed: Added missing flag in "send cyclic message"
- Fixed: Bug in deserialization functions

## V3.7 (2023-06-26)

- First public release