Hey Devlin, I'm not sure if you/we will get it without a CSC of BTU. I, most probably like yourself have an unlocked handset but it's still set to OXM>O2U.
I was going to change my CSC with SAMKEY but think I will hold out until the beta is out in UK to see if we still get it and will then decide if I want to change the CSC. I was looking at SAMKEY as really do not want to wipe at the moment but then again may also do a full backup to a laptop and then change the CSC using the phone dialpad, then restore.
By all accounts there are some pretty bad bugs in the beta (just search for 'beta' on here), maybe they will be on Beta #2 by the time we get it 🤞🏻
I will try to remember to post back here after the UK opens up to the Beta to let you know what if anything I did to change the CSC, well if you are interested that is?
Have a fab week!