Update: Update: Download from here:
.605 AIO - 15p radio and updater blocked
Extracted from .621 SBF file. Credit goes to ky41083 @Rootz for the extration, Team Black Hat for original AIO. This file will need to be flashed from Froyo and installed standard like a ROM. It will put on the radio and put you back to .605 all-in-one.
SBF to Froyo (.340)
Root using z4root
Put zip on SDCard
Install .605 AIO zip (do the usual ROM wipes (data, cache, dalvik)
Boot into ROM straight (no other flashes) - bootstrap, restore nandroid, etc...
In the future if you need to SBF use the Linux method as well. That way you can keep the radio (usually there is no reason to re-write the radio unless you were screwing with NV items)
Let me know of any issues. If you have issues entering CWM after flashing a 2nd-init ROM you will need to SBF using the 1KDS Linux disc for .605 (some have reported issues after flashing 2nd-init ROM after first flash (not everyone) in getting back to CWM)
Signal reception seems about +5 dbm stronger across the board than .13p radio.
Significantly less random 3G drops while in reception zone.
*Goose306 and/or DXF is not responsible for what you do to your phone, it is yours, unless it starts shooting out gold, then we want half.*