Devices / Smart home & cameras / OpenDTU Solar inverter gateway firmware

OpenDTU Solar inverter gateway firmware

Name: OpenDTU Solar inverter gateway firmware
Author: OpenDTU

new version

The OpenDTU Solar inverter gateway firmware is tracked under smart home & cameras. Its latest firmware, 26.9.28, shipped on Sep 28, 2026. Firmwarely has recorded 2 versions since Mar 30, 2026.

Latest firmware: 26.9.28
Released: Sep 28, 2026
Category: Smart home & cameras
Last checked: Nov 6, 2026

How to update the OpenDTU Solar inverter gateway firmware

Open update page ↗

Read the release notes first — firmware changes can require re-doing your config or calibration.
Use the project's own installer where it has one: a web flasher over USB, or an over-the-air update in its web UI.
Otherwise build or download the binary for your exact board from the releases page — the wrong board file will not boot.
Keep the previous firmware image and your config backed up so you can roll back.

Always download firmware from the manufacturer or project itself. Firmwarely links out; it never hosts firmware.

What changed

🚀 Features: Feature: Show firmware compile datetime in system info view Feature: Show daily maximum temperature of the inverter Feature: Show daily maximum production power of the inverter 🐛 Fixes: Fix: CMT radio loses channel, PA level and RX state on country mode change Fix: burst processing read…

Manufacturer release notes ↗

Version history

26.9.28	Sep 28, 2026
26.3.30	Mar 30, 2026

FAQ

What is the latest firmware for the OpenDTU Solar inverter gateway firmware?

Version 26.9.28, released Sep 28, 2026. This page is refreshed every hour from the manufacturer's release page.

How do I update the OpenDTU Solar inverter gateway firmware?

See the step-by-step above. Updates usually arrive through the manufacturer's phone app or roll out automatically. Open the device's settings in the app and look for a firmware or software section.

How does Firmwarely know when there's a new version?

Every hour we read the manufacturer's official release page for the OpenDTU Solar inverter gateway firmware and record the version, date and changelog. Subscribers watching this device get an email when it changes: the next morning on Pro, in the Monday roundup on the free plan.

Is this an official OpenDTU page?

No. Firmwarely is independent. Device and brand names belong to their manufacturers; always download firmware from the official source.