I was having trouble getting my camera to work until I noticed that although the new update would say "successful" it was not actually applying it to my current ROM. I would go to system settings and about phone and the build date was not 3/21. I fixed this by booting to recovery and wiping everything. I also went into "mounts and storage" and chose "format /system" "format /cache" "format /preinstall" and "format /data". I then flashed the update and everything is working great. After that I did an "advanced restore" and restored my data from the 3/4 update. Now all is well.