I flashed the 2.3.320 sbf file and my phone becamed unbricked..wat is the purpose of flashing the .340 SYSTEM ONLY sbf file???
If you're going to put a ROM on.. not much purpose (a rom will just replace the system dir anyway... :S
On the other hand, updating the kernel/baseband/bootloader from here is of use:
TBH Patches: 2.3.340-System, Baseband, 2.3.340-Kernel, Bootloader