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:
Ensure each BIN file matches the correct address and is checked before flashing.
.\OmniRange-C5\Firmware Update\ESP32Ensure 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:
Ensure the BIN names and addresses match and are checked.
.\OmniRange-C5\Firmware Update\C5Ensure 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
The remaining steps are identical to sections 1.3 and 1.4 .