Cant enable DFU mode

[mykez]

opening the greenpois0n app, it says to do a bunch of controls to get into dfu, i do this over and over again, but green pois0n doesn't recognize my iPhone 3gs in DFU mode, but itunes says it is in recovery mode?

currently im in recovery mode according to itunes, (black screen like the phone is off.)

and GP just says waiting for DFU.

anyone have any ideas?

Anyone? i have tried everything

[RkoViper81]

I am having the same issue with my iPhone 3G I got my iPhone 4 to work fine but when I try to jailbreak my iPhone 3G for my gf it doesn't work

[mykez]

do you get the same greenpois0n thing saying waiting for dfu?

[RkoViper81]

yes I do it just keeps saying waiting & when I follow the steps it keeps saying try again

[mykez]

have u tried formating it via itunes? i read somewhere its about backgrounder causing the problem? so if you put 4.2.1 freshly back on it will take backgrounder off.

[RkoViper81]

yes I actually did a restore lastnight & still didn't work I have no clue as to why it won't work but I had no issues with the jailbreak for my iPhone 4 what so ever other then Cydia not working right. I think that's because of all the traffic though. Have you had any luck with yours yet?

[A3gOwner]

I don't think gp will jailbreak 3G or old bootrom 3GS. That my be your problem.

[RkoViper81]

yeah maybe I don't know

[mykez]

i have given up trying, im already JB with redsn0w, but my springboard crashed a lot etc, so wanted to try GP to see if it made any change.

[spinspinsugar]

I have the same problem with my 3g (4.2.1) im also having no luck with rednsn0w (screen freezes on d/l icon)but i jb my ipod touch straight away with greenpois0n no problem. So im guessing its the 3g model? Would like to know the solution too.

[tontodiesel]

Yes I know, yeah right. I searched every forum on the internet I swear and none of those combinations put my iPhone 3g into DFU mode. You can do the trick where you rename files in the package and that will boot it to DFU mode but then I was unable to restore and have probably seen every error code iTunes has.
I hope posting this does not cause apple to close the loophole because nothing else worked but this is what I had to do.
Restore to 3.1.2
Jailbreak with blackra1n (I might have used Spirit also)
Create custom 4.2.1 using sn0wbreeze
Kick into recovery using TinyUmbrella (possibly unnecessary)
Hold Alt-Shift and Click Restore
Select your custom ipsw
You have to use iTunes 9
After you restore iTunes 9 will not recognize your phone and you will have to revert to a more current version to work with 4.2.1
I feel obligated to share this since nothing online helped me and I'm sure there are others.
No need to thank me, just don't tell apple they are nazis, I hate iTunes so much