AT&T M7, Soft Brick, Desperate for help!

I post as a final measure, as after two days of being unable to use my AT&T HTC One M7, I am in need of help. Badly. I have tried everything I could find, it either errors, fails, or crashes, nothing is working for me. I am without an OS, and have an unlocked bootloader, TWRP, and sleep deprivation. This all started when attempting to update to the newest Android available, and has left me stranded with a soft brick. If anyone has any ideas for me, PLEASE speak up. My phone was working fine until yesterday, and I am NOT interested in going back to my Iphone.