Blackout Comms Firmware for Altware Link

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 The Blackout Comms Altware Link firmware is currently only available for use within the USA. Link: 2.3.2 (08/05/2025)
Comm: 2.3.2 (08/04/2025)

Note: The Blackout Comms firmware is a licensed product, but the Blackout Comms link firmware is currently free for download.

By downloading this firmware, you are agreeing to the terms, agreeing to abide by all laws and regulations while using this firmware, and agreeing to hold harmless the developer, Altware Development LLC. Altware Development LLC is not responsible for any data loss or other issues that might arise with with your device before, during, or after flashing. Unless you agree to those terms, don't use this tool or download our firmware.


1. This firmware is for the Blackout Comms Altware link only (shown here).

If this isn't your device, you are probably looking for our ESP32-based mesh link firmware.
2. Download The Firmware

Unzip its contents to somewhere on your PC. You will want the CURRENT.UF2 file from it, which is the binary compiled firmware.

Your existing cluster/data will not be erased during this process. All that data is on your link's FRAM and remains untouched by this process.
3. Copy Firmware To Your Altware Link
  • Connect the Altware device to your PC via USB data cable (not charging cable)
  • Power the device on
  • Double-tap the reset button quickly (nearest the power switch)
  • The light should start flashing different colors
  • The device should appear as a flash drive to your PC
  • On your PC, open the flash drive
  • Copy the file CURRENT.UF2 over top of the existing one on the device
  • The Altware link should automatically reboot
4. OPTIONAL: If you want to clear your device
  • This procedure will wipe any config / cluster / data from your device
  • Power the device off
  • Press and hold the boot button (furthest from the power switch)
  • Power on the device, while still holding the boot button
  • Continue to hold the boot button for 10 seconds
  • Release the boot button and leave the device alone for 60 seconds or so
  • The device should now be in onboard mode (purple light)
  • You may now onboard this new link to your cluster