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PowerByte - Firmware Update v2.0: Fixes Unexpected Shutdown Issue

  • Updated
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PowerByte – Firmware Update v2.0: Fix Unexpected Shutdown

Does your PowerByte unexpectedly turn off after switching modes? Firmware v2.0 fixes this specific shutdown issue.

Is This the Problem You Have?

Update to v2.0 if your PowerByte starts in Bluetooth mode, you switch to FM, SD, or USB, and it unexpectedly turns off after about 10 minutes.

Not your problem? If it will not turn on, will not charge, or shuts down differently, this update may not apply.

What You Need

  1. USB flash drive – 32GB or smaller
  2. Computer
  3. Firmware file: update.ufw
Important: Format the USB drive as FAT32 and keep only update.ufw on it. Save any important files elsewhere first.

Step 1 – Download the Firmware

Click update.ufw to download the PowerByte firmware file to your computer.

Do not rename the file.

Step 2 – Prepare the USB Flash Drive

  1. Connect the USB flash drive to your computer.
  2. Make sure it is formatted as FAT32.
  3. Remove any other files.
  4. Copy update.ufw directly onto the USB drive.
When finished: The USB drive should contain only update.ufw.

The firmware file should not be inside a folder. Safely remove the USB drive from your computer.

Step 3 – Install the Firmware

  1. Turn the PowerByte ON. It can be in any mode.
  2. Insert the USB flash drive into the PowerByte's USB port.
  3. The screen will turn BLACK.

⚠️ The Black Screen Is Normal

The update has started. Do not turn off the PowerByte or remove the USB drive.

Wait about 16 seconds. The screen will briefly light up, you will hear several beeps, then the screen will turn off again.

✓ Firmware update complete.
Step 4 – After the Update
  1. Remove the USB flash drive.
  2. Turn the PowerByte OFF.
  3. Turn it back ON.
Your PowerByte is now ready to use.
Step 5 – Check That the Problem Is Fixed

After restarting, check that the PowerByte works normally in all modes.

FM not scanning? Press and hold the FM button to scan for stations.

Test the shutdown issue:

  1. Start in Bluetooth mode.
  2. Switch to FM, SD, or USB mode.
  3. Use it for more than 10 minutes.
✓ PowerByte stays on? The update was successful.
Update Did Not Start?

If the screen does not turn black, check:

  • USB drive is 32GB or smaller
  • USB drive is FAT32
  • File is named update.ufw
  • File is not inside a folder
  • USB drive contains no other files

Insert the USB drive again. If it still does not start, try another compatible USB flash drive.

PowerByte Still Shuts Down?

If the problem continues, note:

  • Which mode you were using
  • Which mode you switched to
  • How long it takes before the PowerByte turns off

Contact Avantree Support for further assistance and share the details above.

Need More PowerByte Help?

View PowerByte Guides

Still Need Help?

If the PowerByte still shuts down after the update, submit a support request.

Contact Avantree Support

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