help cant restore after beta6, error 341 in itunes

[theguy386]

Was running on 4.2.8 JB and everything was fine... decided to try out beta 6, but was still way to buggy for me, so I decided I would revert back to 4.2.8

downloaded a fresh copy of 4.2.8
installed iTunes 10.3.1.55
entered DFU mode and tried SHIFT+Restore - got error 1600
Tried using Tiny Umbrella and uncheck the options in Advanced tab
now keep getting a constant "cannot restore, error 341"

any idea how I can solve this?

[theguy386]

dont know how it managed to restore, but it restored now... but unfortunately I got stuck on 4.2.10

[iYeow]

You need 4.2.8 shsh blob in order to restore to 4.2.8 fw