Haven't heard of this on soundbars, but lots of reports on "regular" streaming Roku devices, especially Expresses.
Some people with this problem have reported success by using a wifi hot spot on their mobile phone as the internet connection. If/when it completes the update successfully then they could switch it back to using their home wifi network.
If you don't have a phone hot spot available you could take it to a friend or neighbor's and try using their wifi for the update.
Note: this has not been universally successful, but many people have reported it worked for them.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
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