I plan on SBF'ing back to froyo from GB but I am confused as to which SBF'ing file I need to download to get my dx running on the most current version. Which 1 do I need to download? A. 2.2 system version 2.3.15 B. 2.2.1 system version 2.3.320 C. 2.2.1 system version 2.3.340 Also, if I do this, well I still be able to receive updates from verizon (in case they fix GB) and will the phone function as if nothing ever happened? Lastly, for each one of these, do I download the full or system only versions?