InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)FE Fedora Linux @lemmy.ml milon @lemm.ee 3mo ago Error updating to Silverblue 42 .
It's telling you exactly what the problem is.
Well you can't be "new" if you're upgrading.
403 is not a "Linux thing", it just means the server is not accepting your request for a number of reasons. Try again for the next few days. Come back if it still doesn't work.
Can you update it through the Software app?