I was trying to root my device (using FlashTool), but after doing the step when you have to hold "Back" button and turn the device on (while FlashTool is still running), it just lost the ability to launch Android properly and instead it gets stuck on boot screen (black background with white "Sony Ericsson") and I'm not able to continue rooting my device afterwards..!
Any idea why? I did the same just yesterday and got the same problem ,so I had to restore system using SEUS tooll, but I still need to root my phone, any comment is welcome and thanks in advance for everybody..
I was following the instruction mentioned on this link:
www DOT xperiax10 DOT net/2011/09/08/root-your-gingerbread-xperia-x10-tutorial/#comment-31826
And my phone is running GingerBread.