I used to have cyanogen mod installed, then my sim card died. Had to take my g1 tmobile shop, so I downgraded to RC29 and now I have official version of android. They replaced my sim card and everything is fine. I don't plan to go to cyanogen any more. I felt it was too buggy. Things would work like charm in the begining, then weird things would start happening (freezing, failing to boot? Etc.) Anyway, I discovered today that "system update" is missing from Settings > About Phone. Don't know how to request regular updates that are released in last couple months. Any help is appreciated. Thanks.