[brandn7]

i have a 3g 8gig on 3.1.2! i tryed to jailbreak using blackra1n and it downloaded blackra1n but when i opened it it only gave the option to delete! Didnt give the option to down load cydia, rock , and blacksnow! SO I DELETED BLACKRA1N! i TRY to download over and over again and no blackrain! what do i do? please help in anyway!

[en0c]

Once you've deleted the blackra1n.app, you have to restore in order to jailbreak it again. And you need to be on wifi to download and install Cydia, Rock or sn0w.
But when you restore, you automaticly update to 3.1.3 which can't be jailbroken. You can use a custom ipsw to update to 3.1.3 using the shift + restore method.