Firmware Update (v2.0) for Avantree Slumber, the Bluetooth Under-Pillow Speaker – Avantree Support

Purpose of Update:

The Avantree Slumber plays tracks in random mode as if it were in sequential mode.
It resolves an issue with background noise during playback.

Required Materials:

Instructions:

Download the Device Firmware Upgrade (DFU) File:
- Download the firmware file named "Media_product_tool _V2.08.01.rar" from the provided link.
- Open "Media_product_tool_V2.08.01" and select "setup.exe" from the list. When prompted, click “Yes”.
- Follow the prompts by clicking “Next” until the installation is complete.
- Click "Close" to exit.
Find Multimedia Product Tool:
- Download “firmware.zip” and note its saved location for later use.
- Open "Multimedia Product Tool" in "all programs" on your computer and click “Yes” when prompted.
- Locate and select the previously downloaded "firmware.zip" file.
- Choose the firmware labeled "2853C_FENGJINGSHENG" and click "Open".
- On the next screen, click the button below and select "2853C_FENGJINGSHENG".
Power on Slumber:
- Connect your Avantree Slumber to your PC’s USB port for power. Ensure that the On/Off switch is in the "On" position so that the Slumber will be recognized as a U disk for DFU.
- When the arrow button lights up green, click it.
- Wait for the process to complete. Do not disconnect or power off until the update indicates “Successful”.
Finalizing the Update:
- Slide the On/Off switch to the off position and then turn it back on to complete the update process.
- The play modes should now function correctly, and the background noise issue should be resolved.