[Q] New LG G2, is now stuck on Firmware Update screen after attempted downgrade topic

It's a new T-Mobile LG G2 that I decided to try to root, but realized that I had installed the OTA, disabling me to. During the process of trying to downgrade, however, it failed. After trying to restart the phone, the phone simply goes back into firmware mode. I have no idea of what to do. Please help!