iPhone 4 unlock with ultrasn0w

**BlackSn0w** · 02-14-2011, 07:57 AM

Hello everyone,

I have a little question for you guys. My friend has an iPhone 4 4.2.1 with the latest baseband. Now I figured out that you couldn't SIM-unlock the latest baseband with ultrasn0w. But if I downgrade to an other version with tinyumbrella, will it also downgrade the baseband? or do I need a custom firmware?
And if so, what version do I need to downgrade to?

Many thanks,

Blacksn0w.

Actually, I'll make it simpler. What I need is to downgrade his baseband 01.59 and do not care if I have to downgrade firmware. How is it possible?

**iPittsburgh** · 02-14-2011, 09:01 AM

It is not possible to downgrade your baseband.

**BlackSn0w** · 02-14-2011, 09:24 AM

Really? So all he can do is to wait until ultrasn0w is updated? Any idea of when it's coming out?

**iPittsburgh** · 02-14-2011, 09:34 AM

Yes he has to wait. Well there are rumors of 4.3 being released today and the unlock to follow shortly after. Just check back here at MMi every so often, when the unlock is released it will be a slightly popular topic.

**BlackSn0w** · 02-14-2011, 09:34 AM

Alright thank you

**iPittsburgh** · 02-14-2011, 09:36 AM

Welcome

**bondkt** · 02-14-2011, 09:17 PM

Originally Posted by iPittsburgh

It is not possible to downgrade your baseband.

Musclenerd said once that if your an iphone dev (pay 99$) you have the ability to restore back to older FWS and get there baseband.

no one has pressed this, but in the future it seems interesting.

but yeah, wait til after 4.3.

**iPittsburgh** · 02-14-2011, 09:36 PM

Do you have the statement from musclenerd? Was it on his twitter or blog?

**Stray** · 02-14-2011, 09:39 PM

It is not true

**iPittsburgh** · 02-14-2011, 09:43 PM

What is not true? This: Musclenerd said once that if your an iphone dev (pay 99$) you have the ability to restore back to older FWS and get there baseband

**Stray** · 02-14-2011, 09:46 PM

Yeah that.

**iPittsburgh** · 02-14-2011, 09:59 PM

Yeah, I thought so.

**Stray** · 02-14-2011, 10:03 PM

Sorry for the confusion.

**bondkt** · 02-14-2011, 10:49 PM

and yet it is, as confirmed @musclenerd

I don't lie, thanks.

Originally Posted by STRAYunINFIDEL

It is not true

**BlackSn0w** · 02-15-2011, 02:05 AM

So downgrading would downgrade BB also?

**iPittsburgh** · 02-15-2011, 09:44 AM

Not for you Blacksn0w only for iPhone developers appearantly.

**BlackSn0w** · 02-15-2011, 11:34 AM

Oh ok. Alright well thanks anyway guys!

**bondkt** · 02-15-2011, 03:22 PM

no no, its not possible yet ( and may never be, who knows. I just posted those to prove my point)

**Stray** · 02-15-2011, 03:25 PM

Originally Posted by bondkt

I don't lie, thanks.

No problem

**bondkt** · 02-15-2011, 03:30 PM

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