Hey there friendlyflyer0,
I apologize about the late response, thank you for being patient! Were you able to get the Chromecast Voice Remote working again? If not, I'd be happy to help out! Now, with the LED light being a solid white, that means one of two things:
First, I would make sure that the microphone button isn't stuck or that there isn't any kind of dust or dirt inside the remote. Then, I would leave the remote sitting for a few minutes without removing the batteries, so it can finish the firmware update.
I look forward to your response, and if the remote is still giving you issues, please let me know.
We haven't heard back from friendlyflyer0, and it's been a few days, so I'm locking the thread. As always, feel free to make a new thread if you have any more questions or concerns.
Have a good one!