Firmware Flasher

Flash firmware to your MTools Tec devices directly from your browser. Supports nRF52840 (DFU) and ESP32 devices.

Step 1

Select firmware

Device / Firmware Name

Version

Step 2

Connect device

Connect your device via USB data cable.
Click Enter DFU Mode — the device will reboot into bootloader.
A port picker may appear. Select the bootloader port and click Connect.
If already in DFU mode (LED blinking), click Connect directly.

Not connected

⚠️ Optional: Erase device before flashing

Only needed if you have a bootloader mismatch or want a clean flash. This will erase all settings.

Download erase package

Step 3

Flash firmware

🖥 Serial Monitor

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