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

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How to fix some mysterious problems.

I followed the iClarified instructions on how to jailbreak and unlock an iPhone 3G for 4.2.1 and also upgrade the baseband to iPad baseband 06.15.00.

I restored to the stock 4.2.1 IPSW in itunes, and then went through the motions with redsn0w 0.9.6b5, checking the box for iPad baseband.

Initially the phone gave me a springboard, I clicked on Cydia, and then the iPhone went into a loop of restarting, making the beepy noise every 10 seconds or so.

Did I do something wrong? I have seen other sites mention a custom firmware, because the stock 4.2.1 firmware doesn't support iPad baseband 06.15.00 by default. Did redsn0w take care of that, or do I need to find a custom firmware that someone has made?

asked 18 Jun '12, 10:21

samroesch's gravatar image


Every time you upgrade or restore the phone, you have to use custom firmware or else the upgrade/restore probably won't work. So I suggest you try a custom IPSW. You can make by going in extras > custom IPSW in redsnow :) and do not check the 'ipad baseband' and 'install cydia' at the same time. This might cause an issue too.

(18 Jun '12, 12:29) abdullahkamran abdullahkamran's gravatar image

Ok, thanks. redsn0w 0.9.6b5 doesn't have the extras>custom IPSW, is there specific version of redsn0w that I should use? I've read some versions are more compatible with the 3G at 4.2.1 than others, I've downloaded a few different ones, but people seem to suggest 0.9.6b5.

Also, just to clarify, will redsn0w make the custom IPSW? When I went to that option it asked me to browse for an IPSW file. Do I give it the stock ISPW, and then it modifies it?

(18 Jun '12, 12:44) samroesch samroesch's gravatar image

I did have 'iPad baseband' and 'install cydia' checked at the same time, now that the baseband is uprgraded, I will restore again with just 'install cydia' checked off.

(18 Jun '12, 13:11) samroesch samroesch's gravatar image

You should be using Redsn0w 0.9.6rc18 also on a 3G


answered 18 Jun '12, 12:49

theiphoneguy's gravatar image

theiphoneguy ♦

0.9.6rc18 doesn't seem to have the option to build a custom IPSW. The first version to enable custom ISPW's is 0.9.9b9 according to:

(18 Jun '12, 14:41) samroesch samroesch's gravatar image

Scratch that... I didn't have to build a custom IPSW, I guess redsn0w figured things out behind the scenes, the phone finally works... yipee! I used 0.9.6rc19 as that is what I could find. Ultrasn0w worked for unlocking too.

This might be a silly question, but how do I sync music and contacts with iTunes? From what I understand my phone won't play nicely with iTunes now that it is JB'd with iPad BB. When I plug it in, iTunes wants me to restore to the backup that I created, but I think that will downgrade me back to 3.x.x and undo all of the jailbreaking.

(18 Jun '12, 14:58) samroesch samroesch's gravatar image

the backup just restores settings, apps, etc

(18 Jun '12, 18:50) theiphoneguy ♦ theiphoneguy's gravatar image
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Asked: 18 Jun '12, 10:21

Seen: 7,846 times

Last updated: 18 Jun '12, 18:50

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