Overview There are two ways to update your Omi device firmware:
Via Omi App Recommended - The easiest way to updateGo to Settings → Device Settings → Update Firmware
Manual Update For advanced users or troubleshooting Follow the instructions below for your device
Manual Update for DevKit
Download Required Files
Bootloader (required for first-time setup or if corrupted):Firmware (choose your device):
Prepare Your Device
Before starting, ensure:
Battery is above 50%
Using a direct USB connection (avoid USB hubs)
Have a small pin ready for the reset button
Enter DFU Mode
Connect your device via USB
Locate the reset button:
Remove the lid and find the button labeled “RST” Use the button shown below
Double-click the reset button quicklyYour computer should show a drive named /Volumes/XIAO-SENSE
Flash the Device
Install Bootloader (if needed):
Drag bootloader0.9.0.uf2 to the /Volumes/XIAO-SENSE drive
Wait for the drive to eject automatically
Put device back in DFU mode (repeat step 3)
Install Firmware :
Drag the firmware .uf2 file to the /Volumes/XIAO-SENSE drive
Wait for completion (ignore “transfer incomplete” messages)
Device will restart automatically
Troubleshooting
Try a different USB cable (some cables are charge-only)
Try a different USB port
Avoid USB hubs - connect directly to your computer
Retry the process from the beginning
Make sure battery is above 50%
Try double-clicking the reset button faster
'Transfer incomplete' message
This is normal! Wait 30 seconds, then check if the device restarted successfully.
Flashing Consumer Version 1 CV1 requires a special flashing cable that connects to a J-Link programmer. Without this cable, the CV1 cannot be programmed.
Prerequisites
Hardware Required
Omi CV1 device
J-Link programmer
Special SWD flashing cable
USB cable
Step 1: Download Latest Firmware
Get Firmware Files
Go to Omi GitHub Releases for CV1
Find the latest release
Download both files:
merged.hex — Application core firmwaremerged_CPUNET.hex — Network core firmware
Replace Existing Files
cd MAC/ # Optional: Backup existing files mv merged.hex merged.hex.backup mv merged_CPUNET.hex merged_CPUNET.hex.backup # Copy new firmware files to this folder cd WINDOWS \ # Optional: Backup existing files # Rename merged. hex → merged. hex .backup # Rename merged_CPUNET. hex → merged_CPUNET. hex .backup # Copy new firmware files to this folder
Verify Files
Ensure both files are updated:
File sizes should match downloaded versions
Modification dates should reflect the replacement
Step 2: Flash the Firmware
Install J-Link Software from SEGGER
Navigate to the MAC folder and flash:
cd MAC # Flash network core first JLinkExe -CommanderScript program_net.jlink # Then flash application core JLinkExe -CommanderScript program_app.jlink
Install J-Link Software from SEGGER
Add J-Link to your PATH (default: C:\Program Files\SEGGER\JLink\)
Navigate to the WINDOWS folder and flash:
cd WINDOWS # Flash network core first JLink. exe - CommanderScript program_net.jlink # Then flash application core JLink. exe - CommanderScript program_app.jlink Verification If the LEDs start blinking after flashing, the update was successful! Confirm the firmware version in the Omi app.
Troubleshooting
Verify J-Link is installed correctly
Check that the installation path is in your system PATH
Try using the full path to the executable
Try a different USB port or cable
Ensure device is in programming mode
Check that the flashing cable is properly connected
Always flash the network core first
Wait for each command to complete before running the next
Ensure device has sufficient power
Re-download the firmware files
Verify file integrity (sizes should match GitHub)
Check for file corruption during download
Success! Your Omi device is now updated with the latest firmware. Enjoy the enhanced features and improvements!
