Jailbreak 5.0.2 Atv, and downgrade with saved SHSHs



i will get a apple tv with 5.0.2. i whould to jailbreak the apple tv, could i normaly save my blobs with tiny umbrella and jailbreak with seas0npass? 


and, i have a atv with 5.1 but with saved 5.0.2 blobs from tinyumbrella…

i tested on Windows with sn0wbreez (create custom fw with saved blobs) but get error 1600,3194 or 1604… 

possible to do both on a mac?


thanks a lot