for all those stuck in the boot screen

step by step

get the tools attached (mtty 1.42.zip), as mamaich told, you have to use it in bootloader mode, (power + light bulb + reset)

1. stop activesync USB connection
2. Uni : Reboot bootloader then connect USB
3. PC : Run mtty1.42.exe
4. choose USB in "port" (reconnect if can't find.recognise USB and try remove sim and SD card)
5. type : task 28 55aa
6. press enter
7. cause DOC reformatted, so there's no rom in DOC, try reflash any rom that you like

Done.