You're not the only one. I know 6 other people whos sb700 got bricked after update...
Bose whats wrong with the file? You should stop the rollout asap!
Don't do that update!
Thank you for taking the time to post to the community!
The last update was released to update the legal disclosure for the software and hasn't affected any of the functionality of the Smart Home speakers.
However, If you do experience any issues with the speakers following the update, I would recommend factory resetting the system, the instructions for this can be found here. If this fails, contact our technical support team and they will be more than happy to assist you, the contact details can be found here.
I hope this helps! Have a great day!
Jessie - Community Support