Slumber - Firmware Update Guide (v2.0) – Avantree Support

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Slumber – Firmware Update Guide v2.0

Follow the steps below to update your Slumber using a Windows computer.

Purpose of Update: Update your Avantree Slumber to firmware v2.0 if you have either of these problems:

Tracks play in a random order even when Sequential mode is selected.
You hear background noise during playback.

Do you need this update? If your Slumber does not have either problem, you do not need to install this update.

Before You Start

You will need your Avantree Slumber, a Windows computer, a USB connection, and internet access.

⚠️ Important: Do not disconnect the Slumber or turn it OFF while the firmware update is running. Wait until Multimedia Product Tool shows Successful.

Instructions

Step 1 – Download the Device Firmware Upgrade (DFU) File

Download the file: Media product tool V2.10.07.rar

Open the downloaded Media product tool V2.10.07.rar file.
Find and open setup.exe.
If Windows asks for permission, click Yes.
Click Next through the installation steps.
When installation is complete, click Close.

Step 2 – Find Multimedia Product Tool

First, download: firmware.zip

Remember: Note where firmware.zip is saved, such as your Downloads folder. You will need to select it shortly.

Open Multimedia Product Tool from All Programs on your Windows computer.

If Windows asks for permission, click Yes.

Locate and select the firmware.zip file you downloaded earlier.

Choose 2853C_FENGJINGSHENG, then click Open.

On the next screen, select 2853C_FENGJINGSHENG again.

Select 2853C_FENGJINGSHENG on the next screen

Step 3 – Power On Slumber

Connect the Slumber directly to your computer's USB port.
Slide the Slumber power switch to ON.
Wait for Multimedia Product Tool to recognize the Slumber.

Arrow button turned GREEN?
The Slumber has been detected and is ready for the update. Click the green arrow button to begin.

Green arrow button indicates the Slumber is detected and ready for the firmware update

⚠️ While the update is running: Do not disconnect the Slumber and do not turn it OFF.

Wait until Multimedia Product Tool shows Successful.

Multimedia Product Tool showing Successful firmware update

Successful = Firmware update complete. You can now safely continue to the final step.

Step 4 – Finalize the Update

After you see Successful, slide the Slumber power switch to OFF.
Wait a few seconds.
Slide the power switch back to ON.

The firmware update is now complete.

Check That the Update Worked

Test the problem you were experiencing:

Sequential Mode: Play several tracks in Sequential mode. They should now play in the correct order instead of randomly.

Background Noise: Play your usual audio again and check whether the background noise issue has been resolved.

Something Doesn't Look Right?

Arrow Button Does Not Turn Green?

Make sure the Slumber is connected directly to the computer by USB.
Make sure the Slumber power switch is set to ON.
Disconnect and reconnect the Slumber.
Try another USB port on the computer.
Close and reopen Multimedia Product Tool.

Computer Does Not Detect the Slumber?

Try another USB port on the computer.

If available, try another USB cable that supports data transfer, not charging only. Then reopen Multimedia Product Tool and check again.

Do Not See “Successful”?

Do not unplug the Slumber while the update is still running.

Wait for Multimedia Product Tool to finish.

If the update stops and does not complete, close Multimedia Product Tool, reconnect the Slumber, make sure it is ON, reload the firmware, and try again.

Same Problem After the Update?

Restart the Slumber and test it again. If tracks still play randomly in Sequential mode or the background noise remains, contact Avantree Support.

Need More Slumber Help?

Browse more Slumber setup and troubleshooting guides.

View Slumber Guides

Still Need Help?

If the firmware update does not complete or the original problem remains, contact Avantree Support.

Contact Avantree Support