I tried flashing to 2.3.5 after i got stuck on boot after flashing a CM nightly. This got me stuck into recovery and ended up getting a "E: Cant mount /sdcard/" error.
After this, i decided to try flashing back to stock using this Odin one click: http://forum.xda-developers.com/showthread.php?t=731989
Now, my phone boots and gets stuck in a boot loop, constantly restarting the the white at&t startup screen. When i plug it in to my pc to access download mode, all i get is a grey battery screen with a spinning circle.
I now have a USB jig, so what should i do at this point to get my phone back into working condition? Hopefully to where i can flash a stable CM11 rom afterward.