OmniRange C5 Firmware Update Guide

OmniRange C5 Firmware Update Guide

This document describes how to update firmware for the OmniRange C5 in both Standalone Mode and Flipper Zero Expansion Mode .

Pre-update Tools & Downloads

Firmware and tools can be downloaded from:
OmniRange-C5 / Firmware Update (GitHub)

  • ESP32 – Firmware for standalone mode main controller
  • ESP32-C5 – Firmware for C5 module (Flipper Zero expansion)
  • Flashing Tool – Windows flashing utility
  • CH341SER.EXE – USB driver (must be installed before flashing)

1. Standalone Mode Firmware Update

1.1 Configure BIN Addresses

All four BIN files are located in:
.\OmniRange-C5\Firmware Update\ESP32
Ensure each BIN file matches the correct address and is checked before flashing.

1.2 Enter Bootloader Mode

  • Ensure the device is not connected to Flipper Zero
  • Slide the right-side power switch to OFF (device powered off)
  • Connect the computer using the top USB port
  • Use tweezers to press and hold the red BOOT (download) button on the back
  • While holding the button, slide the right-side switch to ON
  • Release the BOOT button
  • If the screen turns gray , the device has entered Bootloader Mode

1.3 Flash Firmware

  • Open Windows Device Manager to identify the correct COM port
  • Select the COM port in the flashing tool
  • Click START
  • Wait until Download → Finish appears

1.4 Verify Firmware

Reboot the device → Tap the screen → Device → Device Info
Confirm that the firmware version is correct.

2. C5 Expansion Module Firmware Update

2.1 Configure BIN Addresses

All three BIN files are located in:
.\OmniRange-C5\Firmware Update\C5
Ensure the BIN names and addresses match and are checked.

2.2 Enter Bootloader Mode

  • Ensure the device is not connected to Flipper Zero
  • Slide the right-side power switch to OFF
  • Connect the computer using the left USB port
  • Press and hold the yellow BOOT (download) button on the back
  • While holding the button, slide the right-side switch to ON
  • Release the BOOT button
  • A gray screen indicates successful entry into Bootloader Mode

The remaining steps are identical to sections 1.3 and 1.4 .

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