iPhone 1600, 21, error on restore iphone 4 jailbroken

[Lillz]

I'm selling my iPhone 4 and I'm trying to restore it with iPhone3,1_5.1.1_9B208_Restore and iTunes either tells me its uneligible, 21 error, or 1600. I've tried dfu mode or everything. I know it has to do with my host files pointing to cydia because gs.apple.com leads to cydia, but the option to enable it is greyed out and not checked in TinyUmbrella... What do I do? I'm just trying to do this to delete all my data, I'm already running iOS 5.1.1 9b206
Update: I just tried going to gs.apple.com again but now it goes to an apple site.. strange. Heres my host:
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 localhost
255.255.255.255 broadcasthost
::1 localhost
fe80::1%lo0 localhost


#74.208.10.249 gs.apple.com
#127.0.0.1 gs.apple.com

 

[TriJetHero]

do you have your SHSH/blob/hashes saved?

without those you cannot restore to 5.1.1

 

[Lillz]

No but now I just restored and wiped it to 6.0.1 so its not jailbroken anymore and it still gives me that message when I try to restore to 5.1.1 'Not eligible for requested build...' does that mean it actually isn't the right one? I'm on att and this is supposed to be the right one..

 

[dhlizard]

No, it means you still cannot (and will not) be able to restore to 5.1.1 firmware.

 

[Lillz]

No, it means you still cannot (and will not) be able to restore to 5.1.1 firmware.

Just found out I have saved shsh blobs on cydia and was able to restore! I'm glad I did.

 

[dhlizard]

Good, taking time to save the SHSH for every firmware version can save your "goose"