18-12-2021 11:10 AM
18-12-2021 11:40 AM
18-12-2021 11:41 AM - last edited 18-12-2021 11:42 AM
18-12-2021 12:21 PM
What is the Samsung CSC code of your Galaxy S21+, (SM-G996B)?
Go to... Settings > About phone > Software information > Service provider software version (See screenshot)
18-12-2021 12:25 PM
18-12-2021 12:39 PM
18-12-2021 12:46 PM
You are on the stock Samsung, non-carrier branded, CSC code BTU.
Try @Blessed4life 's suggestion and try and update using the Samsung Smart Switch PC suite.
18-12-2021 02:04 PM