Samsung have rectified the update issue for the Samsung Note 10+ 5G models now.
Mine updated without issue yesterday.
🌈 Stay Safe & Stay Alert. 🌈
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 3.1/ Android 11.
I ahve teh same issue, it needs to download an add on but either stopes at 99% or opens to install the add on adn then says "App not installed" and repeat and start again.
Hope Samsung sorts this out as I use this for some very important notes for work that I currently can't even access!