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

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How to fix some mysterious problems.

ever sinch i downgraded from 4.3.1 back to 4.2.1 i get a call filed after a recieved call but only if i dont hit the end call first i used greenpois0n to get past error 1015 did not have the prob b4 when i had orignial 4.2.1

asked 11 Apr '11, 22:42

talleymaster's gravatar image


Have you installed anything at all via cydia that you didn't have with "orignial 4.2.1?"

(11 Apr '11, 22:47) spockers ♦♦ spockers's gravatar image

no i have less that i orignally had i googled it and it seems to be a common prob but have not seen a fix yet

(11 Apr '11, 22:49) talleymaster talleymaster's gravatar image

usually with error 1015 you should exit with the Exit Recovery button in iReb or TinyUmbrella, you got this error because you were left with the higher baseband. Try to restore to 4.2.1 again, and instead of running GP use the Exit Recovery to run it normally, double check that phone is working properly (without getting a call failed).

If its working fine then run greenpois0n to jailbreak and verify the call failure error.

If on the other hand you still get the call failed (before jailbreaking) then this is could be caused by the baseband mismatch, you can then verify its not a hardware issue by going to 4.3.1 and checking for the problem again.


answered 13 Apr '11, 07:43

knightz4u's gravatar image


edited 13 Apr '11, 07:44

Alternatively you can also try redsn0w 0.9.6rc12 to jailbreak at 4.2.1 as a more stable alternative to greenpois0n.

(13 Apr '11, 07:45) knightz4u knightz4u's gravatar image

Same problem here,no solution after upgrade my baseband on 04.10.01,only 4.3 fix the call failed :(


answered 15 Apr '11, 17:31

fr3q's gravatar image


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Asked: 11 Apr '11, 22:42

Seen: 995 times

Last updated: 15 Apr '11, 17:31

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