Default Active CSC code

Hi guys,

I recently bought an S5 which was on 3 UK. I've downloaded the S5 BTU Firmware and installed it through Odin.
I then factory data reset after installing but when I connect to Kies, it's still saying that my phone's CSC is H3G. I've downloaded Phone Info and it says my CSC is BTU but the active CSC is H3G/BTU.

How do I get rid of the H3G so I can get full BTU OTA updates? I'm not sure how to go about it as I thought that a factory reset would sort the CSC problem.

Any help would be great

Thanks.

***EDIT***

Seems I found the problem. I forgot to go into recovery after flashing BTU firmware.
Went into recovery and now all is sorted and i'm on full BTU
Phone: Samsung Galaxy S4
Rom: Stock Rooted
Android: 4.4.2 (KitKat)
Knox: 0x1

Phone: Samsung Galaxy S5
Rom: Stock
Android: 4.4.2 (KitKat)
Knox: 0x0