[Q] Can I flash Tmo Stock Image on AT&T Model? topic

Just ordered my wife a G2, it is unlocked however it is the AT&T variant and we are on Tmo. I have read that someone took a Tmo rom and made it possible to flash this to the AT&T model along with the KK baseband so that we can use Tmos wifi calling. However I would like to know if I can simply just flash a Tmo stock image and flash the KK baseband if this will work or am I looking into this all wrong?

This is where I read about the Tmo on AT&T rom:

http://phoneprouser.com/lg-g2-rom-th...g-on-att/1007/


Can anyone tell me if the ROM mentioned in the link above is this the latest ROM for the G2? Thank you in advance.


Side Question, if I want to flash Cyanogenmod and still want to retain the wifi calling can I flash the Tmo rom along with the aforementioned KK baseband?

https://download.cyanogenmod.org/?device=d800