This was released a couple of weeks ago and then pulled. I managed to update during that short window and didn’t have any issues.
Earlier today the box updated itself and is still on 4.30. My guess is that whatever issue was in the first push of the firmware has been fixed and 4.30 is available again.
I can’t remember what’s new in it, but the Info when watching a programme seems much improved. Some of that might be due to the recent back-end update to the TV listings, but whatever the cause it’s looking better than before. Nice.