MeshCore MQTT Web Flasher

Pick one mission. The flasher will guide every step after this.

Mission Brief

Read the current device settings before flashing — this captures your identity key, guest password, WiFi credentials, and MQTT brokers so they can be restored after flashing.

Current Name → Read device first

Current Latitude → Read device first

Current Longitude → Read device first

Current Private Key → Read device first

Current Guest Password → Read device first

Current WiFi SSID → Read device first

Current MQTT URIs → Read device first

Read the current device values before flashing. The browser stores the captured identity, guest password, radio, WiFi, and MQTT values locally for this board and pre-fills Step 4 and Step 5 where possible.

The backup download is a plain-text snapshot of the captured device values plus the Step 4 and Step 5 values saved in this browser for the current board. You can upload a previously downloaded backup to restore all settings without connecting to the device first.

Nothing captured in this browser for this board yet.

Mission Brief

Select the hardware target for this flash. The board determines which firmware binary is downloaded and flashed. If you read a device in Step 1, it may have been auto-detected.

Supported board

Firmware family Loading

Latest build Loading

Flash package Loading

Hardware check Loading

Mission Brief

Flash the firmware to your device. Choose Full Flash for a clean install, or Firmware Update to replace only the application partition and preserve other data.

Firmware Branch

Preset Frequency (MHz) Bandwidth (kHz) Spreading Factor Coding Rate

MeshCore CLI Command set radio 869.525,62.5,8,5

Full Image Loading

Update Image Loading

Waiting to start 0%

Choose the radio profile first, then flash the firmware. The selected radio command is applied afterward in the Configure Device step, followed by a reboot so the radio changes take effect.

Flash Update Only now mirrors the official MeshCore browser flasher path: bootloader, partitions, boot_app0, and the app image are written without a full chip erase.

Flash Full Firmware mirrors the official destructive path: one full image written at 0x00000 with a full chip erase first, so treat it as recovery / first-install only.

The preset populates the MeshCore CLI command, but you can edit frequency, bandwidth, SF, and CR manually.

The browser handles flashing over Web Serial locally. Firmware binaries are served from this host only.

Mission Brief

Set the device name, identity key, guest password, and radio region. Fields are pre-filled from the values captured in Step 1 where available.

Name → Read device first

Latitude → Read device first

Longitude → Read device first

Private Key → Read device first

Repeater Name Optional. MeshCore allows up to 31 characters and rejects `[ ] \ : , ? *`.

Private Key Optional. MeshCore expects a 128-character hex private key and applies it after reboot.

Guest Password Optional. Up to 15 characters. Admin Password Optional. Up to 15 characters. Latitude Longitude

WiFi SSID WiFi Password

Simple mode uses broker 1 only.

Shared model and client version apply to every enabled broker. Each broker pair exposes one primary broker and one optional status broker.

Model Label Client Version

Additional MQTT Servers Broker pair 1 uses slots 1–2. Add up to 2 more pairs (slots 1–6).

Broker 1 URI Broker 1 Username Broker 1 Password Use MeshCore default topic root Use MeshCore default topic root Broker 1 Topic Root Broker 1 IATA Broker 1 Retain Status Waiting Enable optional status broker Enable optional broker

Broker 3 URI Broker 3 Username Broker 3 Password Use MeshCore default topic root Use MeshCore default topic root Broker 3 Topic Root Broker 3 IATA Broker 3 Retain Status Waiting Enable optional status broker Enable optional broker

Broker 5 URI Broker 5 Username Broker 5 Password Use MeshCore default topic root Use MeshCore default topic root Broker 5 Topic Root Broker 5 IATA Broker 5 Retain Status Waiting Enable optional status broker Enable optional broker

Mission Brief

Connect to the device via USB serial and apply the configuration. Use "Apply All Settings" to send device identity, WiFi credentials, and all MQTT brokers in one pass.

Connect USB serialPending
Write radio settingsPending
Write repeater identityPending
Write WiFi settingsPending
Write MQTT settingsPending
Reboot devicePending

Checking

Verifying browser support for HTTPS and Web Serial.

Board Loading

Flash Not started

Serial Disconnected

MQTT Awaiting verify

Firmware Not flashed
Serial Disconnected
Config Not sent
MQTT Awaiting verify

[13:20:40] Ready. Select a board and start flashing.

MeshCore MQTT Web Flasher

What are you doing today?

Read Current Device Info

Choose Board

Choose Radio Settings and Flash Firmware

LoRa Profile

Configure Device

Stored in This Browser

Repeater Identity

Passwords And Location

Transport Network

Broker Settings

Applies To All Enabled Brokers

Additional MQTT Broker Pairs

Primary BrokerBroker 1 + Optional Status Broker 2

Broker 3 + Optional Status Broker 4

Broker 5 + Optional Status Broker 6

Apply Configuration

Command Preview