Getting unsuccessful download errors when trying to download from the android market? Then read on for possible fix.

1.Open 'settings'
2.Select 'applications'
3.Select 'manage applications'
4.Select 'market' (you may have to press 'menu/filter/all' to see it.
5.Select 'clear cache'
6. Back out of the screen and select 'download manager'
7.Select 'clear data'
8.Also clear data for 'Google apps,Google Talk' and 'checkin service'

Done.Should work with any android phone.