Oh, gee. Think I royally messed up my phone. SBF'd the wrong file and now I'm stuck in bootloader. I'm going to move myself over to a thread relating to that now to either confirm my fate with a phone that's toast or miraculously stumble upon a fix for this.
Which file did you SBF? Try booting into stock recovery and boot up while holding the home key, then when you see the Android guy next to a "!" Hit the search key)
Wipe data/factory reset)
do the factory reset 2 or 3 times and then see if your phone will reboot..
if not you're going to want to turn it off to conserve battery until you can locate the correct sbf (.340 system sbf)
i wonder if you could use the .320 full sbf and then update back to .340 with the maderstock.zip
Yes you van SBF to 2.3.320 and use Maderschramm's zip to update, after you regain root and bootstrap obviously. You can flash the zip if u can get clockwork recovery. Doubtful though.