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iPhone Strategy for unlocking 05.16.02 baseband on iOS 4.3.5

M

metroidnemesis

macrumors newbie
Original poster
Dec 6, 2009
11
0
Hi all,

After using Android for several years I've become nostalgic for the iPhone 3GS. Although I've jailbroken many times, I haven't ever had to jailbreak an older device well after the community has moved onto bigger fish. I am on T-Mobile now though so I was hoping I could unlock my device, update it to 6.1.3 and retain the baseband but I'm not certain what the best route would be.

Facts:
iPhone 3GS black
SN: 849466xxxx (made in 09? so later than xx134...? safe to flash?)
Baseband is 05.16.02
iOS firmware is 4.3.5 (8L1)

1) Is it safe to update my iPhone to the iPad baseband 06.15.00 and then downgrade to a GPS functional version (without bricking the baseband)?
2) Should I update to 6.1.3 first and then attempt to unlock and tweak baseband version or try to unlock/tweak and then preserve baseband and update to 6.1.3? Is that even possible as I heard iOS 6 corrupts your baseband upon upgrading?

I would have preferred Whited00r 7 but it seems that the team has not began support for the 3GS and has no plans to. Thanks.
 
metroidnemesis said:
Hi all,

After using Android for several years I've become nostalgic for the iPhone 3GS. Although I've jailbroken many times, I haven't ever had to jailbreak an older device well after the community has moved onto bigger fish. I am on T-Mobile now though so I was hoping I could unlock my device, update it to 6.1.3 and retain the baseband but I'm not certain what the best route would be.

Facts:
iPhone 3GS black
SN: 849466xxxx (made in 09? so later than xx134...? safe to flash?)
Baseband is 05.16.02
iOS firmware is 4.3.5 (8L1)

1) Is it safe to update my iPhone to the iPad baseband 06.15.00 and then downgrade to a GPS functional version (without bricking the baseband)?
2) Should I update to 6.1.3 first and then attempt to unlock and tweak baseband version or try to unlock/tweak and then preserve baseband and update to 6.1.3? Is that even possible as I heard iOS 6 corrupts your baseband upon upgrading?

I would have preferred Whited00r 7 but it seems that the team has not began support for the 3GS and has no plans to. Thanks.
Click to expand...

1) yes
2) Update the BB first to 06.15.0 than downgrade BB to 05.13.04
After that use sn0wbreeze to upgrade to 6.1.3 and jailbreak with p0sixpwn

Try iClarified with tutorials on the BB downgrade with redsn0w, you'll need the older version of redsn0w.
 
metroidnemesis said:
As far as I know, AT&T no longer offers factory unlocks because the law that was protecting those consumer rights sunset.
Click to expand...

I did it just the other week for a friend. The only change I can recall about unlocking rights (as in becoming more restrictive) had a deadline that the phone be sold before a certain date - this was during the 4/4s timeframe.
 
Im pretty sure the law was created to enforce 3rd party sales of unauthorized unlocks. However, a legitiment unlock from AT&T is an Authorized Carrier Unlock
 
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