[Q] Rooting - CF-Auto-Root-m0-gti9300 - HELP!

I've just tried to flash CF-Auto-Root-m0-gti9300.tar.md5 using Odin 1.85 on my S3 jelly bean XXDLID.

Odin got to NAND Write Start but seems to have stalled. What should I do??!!!

Please help, I'm afraid of bricking my phone.

PS I have the latest version of Kies installed.

Cheers guys