One of the main characters behind the jailbreak said there were dozens of holes he could have used, and that was without looking very hard. I really doubt Apple will ever be able to totally seal up their OS.

Slight word of caution
 

Tried to JB my new iPhone 4 earlier this evening and all went well, when I later tried to restart the phone after a backup restore of my itunes music as I was trying to free up some memory, it got frozen on the apple startup logo!! It would not turn off again, so I have put it into recovey mode and restored to factory settings. Will start again and try it.

If I remember right it did something similar when I did the iPhone 3, and I got a bit sweaty there too thinking I had bricked it!! :o

Afternote: All sorted after a restore, JB'd and running again as normal. Phew!

I thought my post was in agreement with yours, just providing some supplemental information ;)

thanks. I didn't mean to imply otherwise. :)

-David

Just did the JB last night after upgrade to 4.0 on my 3G

So far it's actually faster than it was!

Good news, bad news. Apple has released update to fix the security bug but as usual left legacy users out to hang and dry :mad:

Again, Team Dev & Saurik has come to the rescue with their own patch -- works for everyone:
http://www.iclarified.com/entry/index.php?enid=11147
http://blog.iphone-dev.org/post/9414...hat-apple-wont
:D

What is ironic at this point, is that people who DON'T want to upgrade to ios4 for either performance reasons, OR if their phone is not supported (iphone 2g and 3g really) they sort of HAVE to jailbreak in order to get the free jailbreak version of this security update.

Apple is more consistent about rolling out OS updates than anyone else.

For now, it's not a great situation for those who have 3G or older iPhones but supposedly they're working on improving performance on 3G.

So the jury is still out.

Maybe now that jailbreaks are legal, Apple is using that to justify not bothering with providing essential updates for the older platforms. They are letting the hacker community do their job for them.

Well, no one is really sure how illegal they actually were to begin with...

After jailbreak can you upgrade the phone to 4.0.1? I have a iphone 4 with 4.0.0.

Yes, no problem. Just upgrade to 4.0.1 and run the jailbreak again.

Also, download tinyumbrella.com app, install, run it with your jb/carrier unlocked iPhone to save SSH blob on cydia. You will need this in case you have to do a 'restore' with iTunes'......