I have tried to root the Samsung Captivate I897 using Froyo 2.2 OS and there seems to be no way to do it without having the "certificate verification" error during installation. I have tried to use one-click rooting systems, various different update.zip files from many different sources and none of them have worked. It appears that the 2.2 version of android for this phone has been secured so that rooting is not possible. I realize one way to root the phone from this point would be to flash back to 2.1, but that is a pain. Has anyone experienced the same problems and successfully rooted the phone without reverting back to 2.1?