how to downgrade baseband 04.12.09

yetb0

guys i need help on how to downgrade my iphone 4 baseband
i accidentally auto update my iphone 4 ios 6 to ios7
i already downgrade my ios7 to ios 5.1.1 and jailbreak but i cant access my carrier no service
i need advice what software i need to use to downgrade my baseband i keep searching threads but cant find any answer

emailmoz

I did same mistake, and I need help as well..
:(
I don't want to use my iphone as a ipad; Please help!

ninja965

Your only opinion is Factory unlock... witch can cost you $10 or $200...

disqus_qQ4ux6tViV

ninja965 said:

Your only opinion is Factory unlock... witch can cost you $10 or $200...

where do it cost 10 $ .. i found cheapest and Reliable being 69$

alan77

There is no way to downgrade baseband so the only option available is the IMEI based unlock.

ninja965

disqus_qQ4ux6tViV said:

ninja965 said:

Your only opinion is Factory unlock... witch can cost you $10 or $200...

where do it cost 10 $ .. i found cheapest and Reliable being 69$

Depends on the carrier to witch is locked. Mine is locked to UK's O2 and cost me over $210.

disqus_qQ4ux6tViV

That's what i have not seen any where 10$ .. getting iPhone unlock for 210 is really huge