Help with jailbreaking and Cydia for iPhones, iPads, and iPod touches.

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How to fix some mysterious problems.

I have an iPhone 3G with 4.1 iOS installed and 6.15.00 baseband. How can I upgrade to 4.2.1 without error 1015 or that will work successfully.

asked 21 Feb '11, 18:55

reV17's gravatar image

reV17
3.7k121020


If you get error 1015, you can get out by using iReb (second tab has a fix for 1015) or from TinyUmbrella "Exit Recovery Mode" button.

iTunes is writing the firmware first, once done iTunes will attempt to write the baseband but it stops when it finds a higher version (6.15.00) instead of the (5.15.xx) that comes with the 4.2.1 ipsw file and when it stops for this reason it will give the error 1015 or 1013, however the firmware has already been written to the phone, you just need to exit the recovery mode using one of the two methods above (iReb or TinyUmbrella).

The safer method is to use a custom ipsw firmware file (cfw), this firmware would be customized by removing the baseband part in it and so averts the situation for iTunes error generation, you can customize a firmware using sn0wbreeze (Windows) or PwnageTool (Mac).

link

answered 22 Feb '11, 00:52

knightz4u's gravatar image

knightz4u
4.9k91828

Use a custom 4.2.1 ipsw,cannot restore to stock firmware any more because of ipad baseband.

link

answered 21 Feb '11, 19:04

venusanann's gravatar image

venusanann
13.3k11618

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Asked: 21 Feb '11, 18:55

Seen: 5,263 times

Last updated: 22 Feb '11, 00:52

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