Hi, I was wondering if there was a sbf for version 2.2 and system version 2.3.15 out there. Reason why I was wondering for this version, is because I noticed after you upgrade to the official 2.2 latest system version, you can not downgrade to 2.1 and I use to use this method, until I found this site ( MyDroidWorld - Droid X Owners: DO NOT SBF BACK TO 2.1 FOR ANY REASON AFTER OFFICIAL UPGRADE TO 2.2 ). Before I upgraded to the latest official system version, I used the leaked version of 2.2 and the SBF back to 2.1, worked, but I'm afraid to attempt it with the latest official update because of all the warnings leading and saying not to. So I was wondering, if there was a SBF I could use to back up to a unrooted 2.2 system version that will allow me to check for updates and get the latest update for 2.2 system version. As well as I was wondering, if I could make my own SBF of my phone that is on the latest system version for 2.2 that is rooted, so then I would not lose anything that I have saved/root access. Thanks for answering, if can.