[Q] i need help

I try to root my xperia mini pro sk17i by using flashtool
it was never successful and stop at 73% by showing "end flash session"
then, i just cant turn on my phone any more
what can i do??

My USB debugging and unknown sources are check
and I've try five different kind of firmware
some stop a 1% some 2% the further progess was 73%

but all it show that "end flash session" and i cant turn on my phone

after I try a different version of flashtool
Now is showing that
29/027/2012 03:27:10 - INFO - Preparing files for flashing
29/027/2012 03:27:16 - INFO - Device connected in flash mode
29/027/2012 03:27:26 - INFO - Please connect your device into flashmode.
29/027/2012 03:27:31 - INFO - Opening device for R/W
29/027/2012 03:27:32 - INFO - Reading device information
29/027/2012 03:27:32 - INFO - Phone ready for flashmode operations.
29/027/2012 03:27:32 - INFO - Start Flashing
29/027/2012 03:27:32 - INFO - Flashing loader
29/027/2012 03:27:33 - INFO - Ending flash session
with 0%

thanks for all the above suggestions
I took my phone and connect a Window XP system and everything went well
my phone is now rooted
thx everyone