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Who's Online : 2A new Meshtastic firmware build is available: v2.7.25.104df5f. This release is currently marked as an alpha / pre-release, but it’s the newest upstream build and the changelog is substantial enough to warrant a heads-up for Oklahoma mesh operators.
Published: June 10, 2026
Release: Meshtastic Firmware 2.7.25.104df5f Alpha
GitHub release: v2.7.25.104df5f
Web flasher: flasher.meshtastic.org
Why it matters
- Original-generation ESP32 devices are losing the HTTP server due to resource constraints. If you’re still running older ESP32 hardware, read that warning before upgrading.
- There are meaningful fixes for Ethernet gateway stability, MQTT persistence, traceroute handling, and packet relay behavior.
- Several board-specific improvements landed for Heltec, T-Echo, STM32WL, RAK, and Cardputer-family devices.
Highlights from the changelog
- Add T5-4.7-S3 Epaper Pro support and improve STM32WL support.
- Enable LNA by default on Heltec v4.3 and rotate MUI for the Heltec V4 TFT expansion kit.
- Fix W5100S socket exhaustion and Ethernet gateway API reconnect problems after brownouts.
- Fix MQTT settings not persisting when the broker is unreachable.
- Fix traceroute behavior over MQTT and rendering of unknown hop values.
- Improve External Notifications logic and preserve encrypted/public-key metadata during UDP multicast relays.
- Trim features on original ESP32 boards to avoid IRAM overflow, including excluding the web server on those devices.
Operator notes for Oklahoma mesh nodes
- If you manage fixed infrastructure nodes, the Ethernet and MQTT fixes are the big items worth testing.
- If you run older ESP32-based field nodes, verify whether you still depend on the onboard HTTP server before upgrading.
- As with any alpha, test on a non-critical node first before touching backbone, high-site, or gateway hardware.
Downloads
Full upstream changelog: Meshtastic Firmware 2.7.25.104df5f Alpha