Due to technical design, wirelessLAN and Bluetooth Audio should not be used simultaneously
Firmware update
Due to the fact, that Android-5.1 requires a lot of more memory than older Android versions we recommend to insert an external SD-card, or plug in an USB-stick with minimum 2GB free memory space, at least during the upgrade phase!
There are 3 options to upgrade.
Option 1: Two step Method using an USB-memory-stick (SD card).
Plug in an USB-stick with at least 2GB free memory (or enter an external SD card). Then start the Maxwell-10 WEB-UI and follow exactly the following 3 steps:
In the web-interface go to: System - Firmware Update page and check if the Data server field is (default) profile.gigaset.net/device
Press "Save"
Press "Update firmware"
The update will be done in 2 steps.
Upgrade to new Jelly Bean software with USB drivers upgrade to support the USB memory extension.