G965U S9 Plus Xfinity Firmware Needed

Good day,
I was trying to unlock an S9 Plus from Xfinity Mobile with Chimera Software. However, the unlock failed now the phone is stuck on the CRASH MODEM SCREEN.

I need this file to restore it: sm-g965u_bb_G965USQU3ARG2. Can Support or someone in the forum help me out?

Thanks in advance.