Here it is guys!
Boot into download mode again and retry, make sure on Odin 3.10 nothing is checked. Let it download and when it's done, you might have to manually reboot like I did because it looks like it's stuck on download mode.. just hold vol down home and po...
I purchased this case just to have something in the meantime of getting a better one. Product didnt even fit my phone, maybe it was defective? Read some reviews and it seems common.
Did some digging, if anyone has the same headphone issue I did, I flashed the T-mobile original sound zip. All audio works for me, as always make a backup! I take no credit I am just posting a link to help anyone out.
Been waiting for this for so long.. And it's fully functioning! Than you thank you thank you. Flashed last night on the actual tmo version and so far I have not found one thing wrong.. It's flawless