I am actually using 4.8 but I have SBFd with it successfully before.Do you have the right files? Rsd lite 4.9, latest drivers and full sbf file for your phone? Bootloader says ok to program? Try it on another computer as well.
Droid 2 Liberty GB v0.7
I guess i will try and get the latest RSD and check my files and try again before trying to get a replacement.
http://www.mydroidworld.com/forums/...rld-present-droid-2-2-3-20-triple-threat.html
Droid 2 Liberty GB v0.7