[ayato]

I had that problem once. It ended up being the cable. It would charge my phone, but not connect via activesync. I went digging for some other USB to mini USB cables and found one. It worked. Even now I have to sometimes wiggle the cord to get it connected. Lame, but true.

Oh and the ROM needs to be named TITAIMG.nbh when put on your sd card. As for which ROM rom you need to be back to your original stock rom...I am not even sure what carrier you are on.

One last thing you might want to check, put your phone into bootloader, plug it in to your computer, and see if it says USB instead of Serial at the bottom of the screen. If it does say USB, then your cable is working and you can at least run the RUU from your computer if you don't do the sd card route.