Don't forget that this is for the iPhone 4, NOT the 4s

Will I am thinking you need to go back and read the article again. "CYDIA WILL NOT BE INSTALLED because it just hasn’t had time to be updated to the new SDK."
This is just a jailbreak for developers that want to work on getting there tweaks and apps working with iOS6.
My posting this here you will provide more harm than help as the first thing you do is tell people to update to iOS6. In fact I am going to go as far and say this post was stupid. I would pull it if I was you.
"THIS JAILBREAK IS INTENDED ONLY FOR DEVELOPERS OF JAILBROKEN APPS! There are just too many broken components (Apple’s official apps, 3rd-party App Store apps, Cydia apps, etc) for this to be useful to anyone but those truly looking to fix bugs in their iOS 6 jailbroken apps."
>>>If you aren't yet on iOS 6, this is the first step.
Doh, So yank it before someone follows your stupid suggestion and does the first step!

Its starts jailbreaking but then it says "USB communication problem". What do I do?

My ipod was fully jailbroken, but I still don't have cydia :(

I've just did the jailbreak to my iphone 4 (6.0) by following all the steps..............but cydia icon has not come to my home screen . please tell me how to get that.......

tried to jailbreak my iphone 4 but redsnow said i was missing something for the build..please advise...

PLEASE HELP!!!!! my iPod wont turn back on i didn't get it all the way through it kept saying i didn't do it right after releasing the buttons and i tried it a third time now my iPod won't turn back on someone HELP!?!?!?!

It says i am missing something from the BUILD what do i do please help help help help help help help help help help help help help help please

i've never jailbroken an iphone so i'm only commenting from what i've just been reading... for those of you with the "something missing from the build problem" google how to jailbreak my iphone 4 and there is a link there to the updated redsnow jailbreak... at the end it tells you to go back in to DFU mode, select extras from the jailbreak menu in redsnow and then select "just boot" apparently once you've ran throught the whole thing, you have to "reboot" with the just boot option... something to do with it being a tethered jailbreak... hope this helps if you haven't already fixed your problem...

Thanks for the instructions above but for those who need help in jailbreaking their devices, check this website out. http://jailbreakhome.com/ - its very informative and you will learn a lot about jailbreaking.