MeshCore firmware 1.15.0, released on April 19, 2026, delivers a major expansion of supported hardware, a significantly wider frequency range, and a solid batch of quality-of-life improvements.
Seven New Boards
This release adds support for seven devices: the Heltec V4.3, Heltec nRF Tracker (T096), GAT562 Mesh EVB Pro (functioning as both repeater and room server), the GAT562 Watch, the Muzi Works R1 Neo, and the Heltec Wireless Paper as a companion device. The range now spans everything from wrist-worn hardware to dedicated infrastructure nodes.
Frequency Range Down to 150 MHz
The supported radio frequency range now extends down to 150 MHz, opening the door to VHF experimentation. This is particularly relevant for licensed amateur radio operators working with compatible LoRa modules in lower bands.
Default Scope and RX Gain
Default Scope allows users to define a standard scope for outgoing messages. In addition, radio rxgain is now enabled by default, improving receive sensitivity out of the box. The setting can still be toggled via CLI:New dutycycle Command
A new dutycycle CLI command lets users query or configure the transmit duty cycle directly. This is especially useful in regions with regulatory duty cycle limits:
Binary Group Data Packets
MeshCore now supports GROUP_DATA packets in binary format. Applications can distribute structured data — such as sensor readings — across group channels more efficiently, without the overhead of text encoding.
OTA Updates for nRF Companion
nRF-based companion devices now support Over-the-Air (OTA) firmware updates. This eliminates the need for a USB connection when flashing new firmware, making field updates much more practical.Bug Fixes
Several notable bugs have been resolved. GPS preferences now persist correctly across reboots. The BME680 sensor (temperature, humidity, air quality) initializes reliably again. Battery level readings on the Heltec Wireless Paper are now accurate. A bootloop issue on the Xiao C3 has been fixed, the RXEN signal on the Waveshare RP2040 works properly, and WiFi companion functionality for the Heltec V4 and TBeam 1W has been repaired.
The full changelog is available at blog.meshcore.io.