Kinda need help flashing my g900t3 to a S7 Rom. (My Familymobile S5)

Hey guys, I'm somewhat new to the galaxy world again.. I been tryna flash my g900t3 (my familymobile-s5) to a s7 port rom, because since my last post I managed to recover and switched to a twrp recovery and flashed root the correct way without a problem. But somehow When I tried to install the latest insanity rom I did everything I suppose too. I mustve forgot to backup my modem and efs from twrp and almost every modem n bootloader from xda that I tried for the tmobile variant had all failed. But It somewhat booted up at the welcome screen for a quick second, then it just started to loop. So right now I'm downloading the final official 5.1 lollipop firmware through odin again. So where should I go from here?

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