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Old Dec 26, 2012, 02:10 PM   #1
PsstGreek
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iPhone 3G 3.1.3/6.15 - Can't downgrade baseband

A friend of mine gave me is iPhone 3G which was stuck on the Apple logo. So I restored it to 4.2.1, lo and behold I got an error 1015. It has the iPad baseband I know of on it. How would I get this thing into Pwned DFU mode so I can use the custom firmware I made. When I try redsn0w stops the countdown because the phone is in recovery mode.
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Old Dec 26, 2012, 02:17 PM   #2
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Originally Posted by PsstGreek View Post
A friend of mine gave me is iPhone 3G which was stuck on the Apple logo. So I restored it to 4.2.1, lo and behold I got an error 1015. It has the iPad baseband I know of on it. How would I get this thing into Pwned DFU mode so I can use the custom firmware I made. When I try redsn0w stops the countdown because the phone is in recovery mode.
You need to persevere with DFU mode. Ignore the recovery mode logo on the phone (the USB cable) and hold the buttons down as instructed. It *will* go into DFU mode.
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Old Dec 26, 2012, 02:23 PM   #3
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You need to persevere with DFU mode. Ignore the recovery mode logo on the phone (the USB cable) and hold the buttons down as instructed. It *will* go into DFU mode.
I got it. Downgraded it to 3.1.3 then used Tinyumbrella to kick it out of recovery.
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Old Dec 26, 2012, 02:39 PM   #4
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Now I'm getting a "usb connection problem"
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Old Dec 26, 2012, 03:52 PM   #5
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Alrighty, I have this phone on 3.1.3 with the iPad baseband. Now for some reason this one doesn't seem to want to downgrade or do anything.

I did another 3G, I have, same circumstances and it worked perfect. Right now, I'm just baffled. Any help would be nice.
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Old Dec 26, 2012, 04:07 PM   #6
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Sometimes it takes more than 1 try
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Old Dec 26, 2012, 04:36 PM   #7
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I've tried almost a dozen times, even on a Windows machine. Still no joy.
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Old Dec 26, 2012, 04:59 PM   #8
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Finally, I got. Downloaded PwnageTool 4.2, created a new custom firmware, restored to 4.2.1 and downgraded the baseband. Bought an unlock from unlock_fusion
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