Meshtastic adds Ethernet OTA support for RP2350 and W5500 boards

Meshtastic’s firmware tree picked up a new commit, 4f0e2dd, labeled “feat: add Ethernet OTA support for RP2350/W5500 boards (#10136),” and the change lands with an operator payoff that goes well beyond a small code diff. For rooftop nodes, remote repeaters, weatherproof enclosures and always-on mesh backbones, a firmware update path over Ethernet means fewer physical access trips, fewer ladder climbs and fewer moments spent opening a sealed box just to flash a new build.

The timing matters because the commit did not arrive in isolation. GitHub’s develop branch activity showed it alongside other infrastructure work, including a NodeDB warmstore item and board support updates, a pattern that points to Meshtastic hardening itself for gateway-class deployments rather than only handheld use. That fits the shape of the project now: an open-source, off-grid, decentralized mesh network built to run on affordable, low-power devices, but increasingly expected to stay put and keep working in hard-to-reach places.

The new Ethernet OTA path is already visible in the tree. A dedicated script, bin/eth-ota-upload.py, uploads firmware to RP2350-based Meshtastic devices through a W5500 controller, compresses the image with GZIP, sends it over TCP with the MOTA protocol and authenticates with SHA256 challenge-response using a pre-shared key. In other words, this is not a cosmetic checkbox for a board definition; it is a real transport, update and security pipeline for fixed hardware on wired backhaul.

The related RP2350/W5500 build makes the operational intent even clearer. That variant enables HAS_ETHERNET_OTA, exposes an Ethernet OTA firmware update server on port 4243 and increases LittleFS from 0.5 MB to 0.75 MB so a GZIP firmware image of about 614 KB fits for OTA staging. The stack is aimed at nodes that can sit on Ethernet, keep a stable link and accept updates without anyone touching the enclosure.

Meshtastic’s own flashing documentation already supports nRF52, RP2040 and RP2350 devices through drag-and-drop and browser-based web flasher flows, so Ethernet OTA extends an update-friendly ecosystem that was already moving away from cable-only maintenance. The network configuration docs also show Ethernet and Wi-Fi support at the device level, which makes the RP2350 and W5500 combination feel like the right place to add remote updating. For the operator staring at a node bolted to a roof or locked in a field box, the difference is simple: the next firmware cycle does not have to start with a screwdriver.