IMPORTANT: Attach Antenna Before Powering On!
Always connect an antenna to your device BEFORE plugging in USB or turning it on. Transmitting without an antenna can permanently damage the LoRa radio chip. Even a few seconds of transmission without an antenna can cause irreversible damage. This applies to flashing AND normal use.
Step 1: Enter DFU/Bootloader Mode
Method: Boot Button
- 1 Unplug the device from USB
- 2 Press and hold the BOOT button
- 3 While holding BOOT, plug in the USB cable
- 4 Release the BOOT button after 2 seconds
- 5 Device is now in DFU mode
Note: If already connected: Hold BOOT, press RST, release RST, then release BOOT
Step 2: Install Drivers (if needed)
CP210x USB to UART Bridge
Usually not required on modern systems
Step 3: Flash Firmware
Open the web flasher for your chosen firmware in Chrome or Edge browser:
Step 4: Post-Flash Configuration
MeshCore Setup
- Device will reboot after flashing
- E-ink display shows status
- Connect via Bluetooth for setup
- 20uA deep sleep - extreme battery life
Meshtastic Setup
- Device reboots with Meshtastic
- E-ink persists without power
- Configure via Bluetooth
- Set region to US
US Users: Set frequency/region to 915 MHz (US). This ensures compatibility with the NodakMesh network and other US mesh networks!
Tips & Notes
- E-ink display persists content without power
- 20uA deep sleep current - incredible battery life
- Perfect for solar-powered setups
- Ultra-thin design
- Display only updates when content changes