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I followed the instructions on this page:

In an attempt to jailbreak my i-phone 3G running 4.2.1. Now, after Greenpoison failed the phone will not start. Can anybody help me to get this working again because I've only just paid for the phone and I'm screwed if it's bricked!

Thanks everyone, I hope you can help me.

asked 12 Feb '11, 09:49

devilman138's gravatar image


closed 04 Sep '13, 15:12

spockers's gravatar image

spockers ♦♦

The question has been closed for being "ancient" by spockers, 04 Sep '13, 15:12

um you might be in dfu mode so hold home button for 15 seconds and then hold home and lock button for 10 seconds and then only hold lock button for 2-3 seconds.


answered 12 Feb '11, 11:17

patrick's gravatar image


i did this but i get nothing.

(12 Feb '11, 12:17) jmoore jmoore's gravatar image

just worked for me thanks bud, when i tried to get into dfu mode for greenpoison it says on the greenpoison start up thing i downloaded that it was not in dfu mode and had to try again :S im on rc5 version for my 3G because rc6 didnt work

(08 Sep '11, 14:33) cspotter cspotter's gravatar image

I have the same question as jmoore. I just tried to jailbreak my iPhone and now he doesnt work anymore..

I tried to press the sleep button alot and long, but it doesnt work... I even tried to charge, but the iPhone didnt give any response.. Then I tried to plug on to my computer but my iPhone still dont respond.

No apple icon, it just stays black...

Help pls I need my phone really hard in an hour !! D:


answered 12 Feb '11, 10:35

Tobiasvk's gravatar image


You cannot brick it.

With "won't turn on", do you mean the Apple logo? In this case, just run greenpois0n rc5 again - it should get you out of this recovery loop. more infos

In case everything fails, you can always do a fresh restore in iTunes. Put your device into DFU mode and install 4.2.1 again. Then rerun the latest version of greenpois0n rc5 to jailbreak.


answered 12 Feb '11, 10:19

http's gravatar image

http ♦


what if it wont turn on at all and the computer says it doesnt recognize the usb device

(12 Feb '11, 10:23) jmoore jmoore's gravatar image

nvm it's because I used greenpoison on my 3G and it isnt for iPhone 3G...

Plugged in and out alot of times in comp and its recovering now!


answered 12 Feb '11, 10:52

Tobiasvk's gravatar image


Please open a new question and dont post on one thats almost a year old and no relation to your issue


answered 04 Feb '12, 17:48

TyTats's gravatar image


edited 04 Feb '12, 17:57

theiphoneguy's gravatar image

theiphoneguy ♦

could be a hardware problem, check your doc connector or if your device is more than two years old, the battery could be dead.

(04 Feb '12, 17:54) JuergenWest ♦ JuergenWest's gravatar image

iPhone 3G 4.2.1 jailbreak tools are: redsn0w, sn0wbreeze, and probably pwnage tool (if mac) but never greenpois0n. Restore and start over. Use a custom ipsw if you need to protect/preserve your baseband for present or future unlocking.


answered 04 Feb '12, 17:57

JuergenWest's gravatar image

JuergenWest ♦

hold in power button and home button at the same time :), it worked for me, i cannot do this jailbrake thing its too complicated and mucks up my ipod .


answered 09 Feb '12, 11:43

w33tashy's gravatar image


i jailbreak my phone after i go it working i stay out of battery and now my phone wont turn on i did everything and just stay on the apple logo and i try to restore from itune and dont let me do it cus my phone has a passcode but i cant do anything help please... ?


answered 04 Sep '13, 12:54

lynnjorge's gravatar image


That doesn't answer this 2 1/2-year-old question.

(04 Sep '13, 15:11) spockers ♦♦ spockers's gravatar image

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Asked: 12 Feb '11, 09:49

Seen: 80,098 times

Last updated: 04 Sep '13, 15:13

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