iPhone OS 3.1 / Modem firmware 05.11.07 / bootloader 05.09[G2M3S2]

Hi Dev-team/ All,

recently i bought a used iphone 3G, the guy gave me the phone with 3.1 OS with specification as mentioned in the title.

When i downgraded my phone to 3.0.1 and got locked and it was asking for original sim and
now i tried to jailbreak with Redsn0w - that was successful.
initially got struck with jailbreaking because i was using a wrong OS restore
actually i was trying with iPhone2,1_3.0_7A341_Restore.ipsw which is wrong one and didnt work
but successful with this download - iPhone1,2_3.0_7A341_Restore.ipsw link is as follows iPhone1,2_3.0_7A341_Restore.ipsw - Wuala, social online storage

and tried to unlock with Ultrasn0w throught Cydia - again struck here. its not allowing me to unlock, thought i should downgrade baseband and tried with fuzzyband 3.1 gm it says baseband version ICE2-05.11.07 -downgrading will only work with Baseband Bootloader 05.08
is there a fuzzyband tool for OS 3.0.1?

i tried to downgrade bootloader 05.09 - i could not find tool to downgrade,
can some one help, or is it end of unlocking?
Dev-team or some one please help.

Thanks in advance.
CNA

can't solve still now :(
you can only use rebel sim, or some other generated unlock sim :)

iPhone next year probably will follow suit. As of today the OS3.1 doesn't have it. Will most likely need the hardware to support it.
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