Thank you for your post. I'm sorry to hear that you are having this issue with your Lifestyle 650.
I'd like you to check the software version and update if necessary. You can check the version from any of the following options:
From the display on the remote control:
In the SoundTouch App:
Once you have determined if you have the latest version (Firmware: v20.0.10), if you do not, follow these steps to perform the update:
Let me know how this goes, and I will be happy to discuss further options if need be.
Charlotte G - Community Support
Thanks for posting and updating us on this.
Have you checked to ensure that you are running the latest version of the SoundTouch app?
Thanks for updating us on this. I would recommend performing a product reset on the system, this usually can remove the system from the rebooting loop.
This can be done via:
Thank you for testing that. We have exhausted the possible troubleshooting options and therefore I would strongly urge you to contact your local Customer Service center who can explain the service options for your Lifestyle 600.
Contact details can be found HERE. Select your country > Scroll to the bottom of the page > Click 'Contact Us'
Let me know if you have any further questions.
Have a great day!