Thread: How to re-upgrade to 4.2.1
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12-15-2010, 02:46 PM #1Green Apple
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How to re-upgrade to 4.2.1
I had to restore due to a mistake I made. I tried to restore back to 4.2.1 but, that is not possible due to TU not being able to kick it out of recovery. I restored to 4.1 and all is good. But, I like some of the 4.2.1 things better. This just came to me a few minutes ago and probably could of avoided some probs. anyway, If I custom restored to 4.2.1 and it never comes out of recovery mode...can I jailbreak (rednsnow)while it is still in recovery and point it towards 4.1 so I can take it out of recovery when the process is done?
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12-15-2010, 02:47 PM #2
Isn't there redsnow that if u just update to 4.2.1 u could jailbreak it?
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12-15-2010, 03:05 PM #3Green Apple
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Yes, but it still went into recovery afterwards. sometimes into a loop.
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12-16-2010, 11:09 AM #4
TU is not letting iTunes update your baseband and 4.2.1 won't work without the newest bb. If you don't need an unlock, delete TU's mark on your iTunes host files and then upgrade to 4.2.1.
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12-16-2010, 12:44 PM #5Green Apple
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Unfortunately, I depend on unlock. It looks like I'll need a Mac for custom 4.2.1 FW or wait for a custom 4.2.1 PC FW. Does that sound about right?
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12-16-2010, 07:12 PM #6
Which iPhone do you have?
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12-16-2010, 07:21 PM #7
I might be missing something, but it seems that you could just do a normal update in iTunes and then jailbreak with redsn0w
Name? whereswaldo
iDevice + Firmware? 32GB Black iPhone 4 iOS 5.0
Computer + OS? Dell Inspiron 15R 2nd Gen i5, 2.3 Ghz, 750GB HDD, 8GB RAM Windows 7 HP
Location? Toronto
Found yet? No
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12-16-2010, 07:24 PM #8
^He needs and unlock. Custom firmware required. 3GS?
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12-16-2010, 07:49 PM #9
So i was missing something
Name? whereswaldo
iDevice + Firmware? 32GB Black iPhone 4 iOS 5.0
Computer + OS? Dell Inspiron 15R 2nd Gen i5, 2.3 Ghz, 750GB HDD, 8GB RAM Windows 7 HP
Location? Toronto
Found yet? No
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12-16-2010, 08:48 PM #10The need for an unlock.
Originally Posted by whereswaldo
Originally Posted by UltraFast
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12-16-2010, 09:40 PM #11Green Apple
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Got it figured out. So easy . Instead of hitting shift restore you have to hit shift upgrade and then do everything else normal! Somebody might want to keep this thread on top. after searching all over I finally found (to me) the holy grail of different fixes for just about every combination of phones and firmwares. He has it on a spreadsheet and you just find your phone and FW. Then just follow the chart for the proper fix.
About half way down on this page is a link to his upgrade doc.
click this link My work, my life!
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