I was on XEU/XEU/XFV and flashed the XFV firmware using the same Odin.
I am now sitting on XFV/XFV/XFV again, but wanted to change the CSC to XFA in order to use WiFi calling through CellC.
The way i see it,
that you are originally, on CSC XFV/XFV/XFV .
That is a Vodacom, branded device.
(it's not locked, just branded)
Note that your CSC ... /.... /XFV (3rd one) is hardcored, and cannot be changed ( without root).
Also note that wifi calling depends
on the correct Samsung Firmware, you have installed on device , as well as your Service Provider (sim)
If it's enabled by "them" on your sim etc.
Further,
I will give you a example.
I am originally on CSC XFV/XFV/XFV.
When i flashed Samsung Firmware
CSC XFE, (which is unbranded
Samsung, South Africa)
I landed on XFE/XFE/XFV
I had no Samsung Pay.
No option to enable wifi calling
in XFE Firmware.
I could see wifi setting, but not enable it.
Also, wifi calling is enabled on my sim
Further,
I lost my Samsung Pay,
No inbuilt Spam Protection (Hiya) etc.
Note that,
other forum members, with a Mtn /Telkom /Cell C device/handset
could enable above, when flashing CSC XFE and had relevant functions working.!
With my Vodacom XFV , i could not.
Also you must flash 4 of the 5
files with correct Odin version (after extracting your relevant download firmware)
Also place each one in their correct
slots in Odin.
Otherwise you risk soft bricking your device.
Good luck.