how to tell iPhone 4 Firmware without passocde?

[karkid]

So my cousin let his kid play with his iphone and she set a passcode on it somehow but doesn't remember what she put. He's asked me to restore it but before i do. Was wondering if there is anyway to check which firmware device has on it?

 

[Applejuiced]

Try f0recast.
http://ih8sn0w.com/index.php/products/view/f0recast.snow
But if you're going to restore it anyway what difference does it make unless you care about the unlock.

 

[karkid]

care about the unlock, he bought it from a cellphone shop that told him it was only SOFTWARE unlock ...

 

[Applejuiced]

I see.
Then restore to 4.1 while running tinyumbrella so you can preserve the baseband and then JB it.
Install ultrasnow from cydia after to unlock.