iPhone OS 3.1 now enforces Exchange encryption policy, may block pre-3GS iPhones

is it possible to upgrade applications on 3gs iphone jailbroken?
if they upgrade it, will it causes problem?

thanks for ya answer

Another optioIt doesn’t. Strangely, once one begins extracting data from an iPhone 3GS, the iPhone begins to decrypt the data on its own"n for 2G owners is not to upgrade to 3.1.

Apple's KB Article
http://support.apple.com/kb/TS2941
still does not make matters any clearer.
quote... "Note that iPhone 3GS supports device encryption."
Does that mean:
1/ That data has to be encrypted when stored on the iPhone's flash memory so that it can be wiped or at least the AES 256 Key can be destroyed if the device is lost or stolen.
Or
2/ Does it mean the iPhone begins decrypting the data stream on its own without any need for the user to attempt to decrypt the data.

If 1/ iPhones before 3GS are insecure and Apple allowed them to work around Exchange Server's requirement for a flag which essentially says "I'm secure!"
If 2/ Pre 3GS iPhones cannot decrypt data streams (as I understand Apple's comment "Note that iPhone 3GS supports device encryption." so I'm saying it's 1/ therefore Apple is guilty of using security through obscurity, which is the same as no security.

I have a regular 3G and upgraded to the 3.1 software this morning. I have an Exchange 2007 environment and am running without any issues.

I use interways.net and my iPhone 3G with OS 3.1 works perfectly. I can recommend interways.net, very good service, great support people, low price...

I've never really been mad at Apple before, but this one has got me. I've been wanting e-mail from our Exchange ever since I started with my new company last year. We finally have it, and because I'm an early adopter of the 3.1 software on a 3G phone, now I can't get it.

They should have put in BOLD letters before upgrading that this release will disable exchange sync'ing on phones older than the 3GS and should have asked 3 or 4 times for confirmation that you wanted to take the 3.1 upgrade.

This is a very bad customer relations issue for them. They just alienated a large group of people who had bought the ads that iPhone 3.0 supported Exchange and rushed to get their companies to let them have their corporate e-mail.

Once a company realizes that it only worked because of a security hole, they will be unlikely to turn off encryption.

Of course, I'm probably going out right now and get a 3GS, so maybe this was a marketing ploy on the part of Apple -- and I'm falling for it!

I have a 3gs and ugraded to 3.1. I can get email from our Exchange server 2003, but the calendar is kaput!

My employer already made the decision for me. After having been supported on iPhones for about a year, we (the 40% of the office on the iPhone) awoke one morning to find that my employer had shut us off overnight due to these very security concerns. Email, contacts, calendars, all gone. We came into the office that morning to learn that we were now a Blackberry-only shop.

They say you never realize what a great thing you had until its gone – they weren’t kidding.

It’s been a painful transition – simple things (visual voicemail, a decent app store, native iTunes support) just don’t exist on the other side of the great divide. My phone has gone from being a major piece of how I experience my day – a real smartphone – to being simply an email and cellular device that takes up too much space in my pocket.

Mind you, all of us iPhone users paid for those devices out-of-pocket, which left a lot of people feeling jaded to start with, but this has been a nightmare.

Greg. Try to disable your exchange account. Then change your time for pin requirements. You should have the one hour option again. Enable your exchange account and you should be all set.

Another option for 2G owners is not to upgrade to 3.1.