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Nano G2 Ultra Setup Guide

⚠ ANTENNA SAFETY - ALL DEVICES: Always connect an antenna before powering on any LoRa device. Even a brief transmission without an antenna connected risks permanent damage to the LoRa radio chip.

Nano G2 Ultra - Setup Guide

The Nano G2 Ultra is a premium nRF52840-based node with a wideband radio covering 815 - 940 MHz, a 1.3" OLED display, and approximately 3.5 days of battery life. Its wideband capability allows it to be configured for different regional frequency bands (433 MHz, 868 MHz, or 915 MHz) with the same hardware.

Specifications

AttributeValue
MCUnRF52840
RadioSX1262 (wideband)
Frequency Range815 - 940 MHz (covers 868 & 915 MHz bands)
Display1.3" OLED
Battery Life~3.5 days typical
Price$85 - 90
StrengthsWideband radio, excellent 3.5-day battery, premium build, 1.3" OLED
Wideband Note: The Nano G2 Ultra's radio covers 815 - 940 MHz, meaning the same hardware can be configured for 868 MHz (Europe) or 915 MHz (US/Canada) frequency plans. This makes it useful for international use or multi-region testing.

Driver Installation

No driver installation required on any operating system. The nRF52840 presents as a USB mass storage device, visible automatically on Windows, macOS, and Linux.

Entering Bootloader / DFU Mode

  1. Connect the device via USB-C.
  2. Rapidly double-tap the RESET button.
  3. The device appears as a USB drive in your file manager/Finder/Explorer.

Firmware Flashing

Method A - Web Flasher:

  1. Enter DFU mode (double-tap RESET).
  2. Open Chrome or Edge and navigate to:
  3. Select Nano G2 Ultra from the device list.
  4. Click Flash.

Method B - Drag and Drop:

  1. Download the .uf2 firmware file for Nano G2 Ultra.
  2. Enter DFU mode.
  3. Drag and drop the .uf2 onto the USB drive.
  4. Device reboots and applies firmware automatically.

Post-Flash Configuration

  1. Set region to US (selects 915 MHz frequency plan).
  2. For other regions, select the appropriate region code in the app.
  3. Configure node name and channel settings via Bluetooth app.

Known Quirks

  • Premium pricing reflects build quality and wideband capability - no significant issues reported.
  • Wideband hardware does not automatically configure for all bands - region must be set correctly in firmware.
  • Double-tap reset timing is similar to other nRF52840 devices - may take a couple of attempts.

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