All of them do, there not real sbf's. All they are is the /system folder formatted to an sbf file. Thats why you can flash the r2d2 2.4, or any of these Roms for that matter. Every single one of them has the 2.2 kernal, so therefore it does not matter which one you use. I had ota and effed up theming, and flashed the TBH sbf that they released. OTA is 2.3.15. This sbf brought me to 2.3.13. It doesn't matter, I then flashed 928Droid's back to stock 2.3.15 update.zip to get my software version back to .15. So it doesn't matter at all which one you use, as long as your on 2.2. Just don't flash 2.1 when your on 2.2. That is the ONLY thing that matters.