Hi @themoods
Welcome to the Sonos Community!
When updating, it’s extremely important that the update file is downloaded without error. When you download a file on your computer and one of the connections on the path to the server is broken, another path is sought and the download resumes. When Sonos updates and there is a broken connection on the path to the server, the update is halted and goes no further. This is the usual reason for error 30. Your situation is a bit strange, however, as your other speakers don’t report an issue. There could be an issue with the Roam’s local reception of the data, but just moving it would resolve that.
Now that your Roam has updated, it won’t need to update again when you add it to your home system, so you shouldn’t have any immediate trouble.
When the next update comes along, if the Roam fails to update again, I recommend you get in touch with our technical support team who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports. Be sure to mention that the Roam’s first update was only successful on another network.
"Common sense is the collection of prejudices acquired by age eighteen." - Albert Einstein