[TheUltimatePwner]

I just bought an Iphone from someone who had recently updated to 3.1.2, Luckily for me blackra1n was released later on that nite, I jailbroke it and downgraded using fuzzyband, And Im now confidently on baseband firmware 04.26.08 I installed ultrasn0w bt I still get the Sim failure, Invalid Sim error, Any help please

[15india]

restore with custum firmware, unlock with ultrasn0w it will definitely work or try another sim card

[TheUltimatePwner]

How do I do that, because redsn0w isn't compatible with version 3.1.2

[nikozen]

Find a "friend" with a mac. Currently to upgrade via a PC you need to have someone use PwnageTool to create you a custom FW which you can then use on a PC. Or you search Google and download one off the interwebs. If at all possible I'd go with finding a friend with a mac and making your own custom FW.

[TheUltimatePwner]

I actually downloaded a CFW dat wasnt hactivated, now I'm screwed, if i put it in recovery mode and restore with an activated one, would dat work?

[nikozen]

As far as I know if your baseband was upgraded to 05.11.07 you are sol as there currently is no unlock for that baseband. Nor am I aware of any way to downgrade the baseband from 05.11.07 to 04.26.08.

[Madman604x]

how did you downgrade the baseband?????

[confucious]

BlackRa1n does not hactivate but a hactivated custom FW made with pwnage 3.14 will work.

[l0k0]

IF you are not using an ATT sim, then you will need a hactivated cusom firmware file. However, IF your using an ATT sim, then u can just use an un-activated custom file. Itunes will activate it for you.

[TheUltimatePwner]

I used fuzzyband to downgrade it, if y'all care to know, you can get it off cydia, but it only works with the right bootloader and there's a 20% chance you'll have it, I acytually did have it, well I just found a hactivated cfw and re-restored it, now I'm on 3.1.2 on my T-mobile and loving it!