what do you mean by repair permissions and zap the pram?PowerBookG4 said:try to repair permissions and zap the pram then try to use software update again, if that still doesn't work, try to update your computer downloading direct from apple.com
Jarritos said:it still crashes
In your utilites, do you have the ''installer'' application?
If you do, download the 4.2 package which cures it.
If your installer is missing, you need to re-stall upgraded Tiger