if i install this and i later need to sbf will it be safe? i remember reading that the droid 2 with 2.2.1 you cannot sbf with the 2.2 sbf file.
is same true here?
What you read about, was the 2.3.20 leak which was 2.2.1. It was a full update. It included patches to the Bootloader.
Focused only contains framework (etc.) from 2.2.1, it will NOT change the bootloader, and you will not have problems .sbf'ing after you install Focused.