I downgraded to 4.2.1 from 4.3.2

[powel025]

I down graded my phone4 from 4.2.3 to 4.2.1.... But no luck with the baseband still same 4.10.01 well i did the jailbreak also now i wanna do carrier unlock and wanna cancel my at&t so that i could gonwith simple mobile or h2o .... Help me with this .... I did my unlock with green poision plsss is there anyway to unlock yhe baseband 4.10.01

[powel025]

Its from 4.3.2 to 4.2.1 .... Sorry made a mistake on that

[daytonaviolet]

once you go to 4.10.01, i dont think you can ever go back to 1.59 bb.

[DevouredDreams]

once you go to 4.10.01, i dont think you can ever go back to 1.59 bb.

you are correct. you cannot downgrade the baseband on an iphone 4..

only 3g with 5.8 bootloader can downgrade the baseband

[i.Annie]

You also can't get a carrier to unlock your iPhone in the US with US service providers

[powel025]

What about with gevey sim pro hope itbworks for me