Originally Posted by Imarc4G
did you have unrevoked3, before going back to 1.47...? i am having the same error. i renamed it to just, update. and still having the same error. right now i have Unrevoced3 with fresh rom.
I was rooted, but I did not use unrevoked. I followed the instructions here, [How To] Unroot and return to stock. - Android Central Forums
to return to stock 1.32 rom, and then updated to 1.47 by ota updates, then finally I was able to apply the 2.2 update.zip.