Sound the klaxons: iOS 4.1 now available for download

What's the chances of some app appearing for jailbroken devices to allow 3G users to use Games Centre? I'm annoyed that a working feature was deliberately removed.

For those wondering about moving from 3.1.3 to 4.1, I upgraded my wife's 3G to 4.1, and left my 3G at 3.1.3. Here are the results. All the tests were done with WiFi. Two 8GB 3G iPhones tested side by side.

Full Power Down - 4.1 is 1s to 3s faster
Power Up - 4.1 is about 5s faster!
Slide to Open - 4.1 is 1s faster
Safari Open - tie
Mail Open - tie
Loading Engadget - 4.1 is a bit under 1s faster
Opening Settings - 4.1 is 1s SLOWER
Opening Google Earth - tie
Spinning globe in Google Earth - 4.1 is very slightly jaggier, stutters a bit more than 3.1.3. Can't quantify.
Opening Youtube - tie
Starting Youtube Clip - 4.1 about 2s SLOWER

A number of apps like Contacts, Remote, iCamcorder, iPod, and others load about 0.5s slower on 4.1, but they also close about 0.5s quicker.

In summary. It seems like 4.1 holds it own vs. 3.1.3 in responsiveness except for starting Youtube video and Google Earth animations. I'm not a software guy so I can't explain any of it. I did most of these tests a few times. Some of the longer time differences varied from test to test. The numbers I show are sort of an eyeballed average.

Done earlier today. So far, impressed with a couple of things. on my updated iPhone 4:

a. Look MA the bars stay on and there's a LOT of them. With the deathgrip in a known deadzone, was able to not only use the phone, but also to use the web as well to access facebook, foursquare, etc. Very nice.

b. Did not have the proximity problem so that's nothing I can report on.

c. seems zippier as well.

d. HDR...not happening for me. Love the Pro HDR app and will continue to use that one until the next rev when Apple figures this out.

e. Game center...have not even launched it.

Watching the app updates come in and well...let's go from here.

Mike

Yup, proximity sensor still not working properly on my iPhone 4. Booo!!!

The 3G update works great on my wife's phone. Much faster and less crashes! However, the 4.1 on my 3GS seems to have picked up an interesting feature - the Power/sleep/hold button works sporadically - usually not working. I can't seem to turn it off - I'll be attempting a restore shortly to see what happens.

Great Sucess!

Installed, and as it periodically does, iTunes decided to erase all the music off of my iphone 4. 3 hours later, still reinstalling (only 16 GB). Doesn't seem any faster to me, but rather continues iTunes crappy track record of slow syncing and bugginess. Patience wearing thin with apple...

Proximity sensor still broken. Getting some weird jittering when scrolling in the settings screens.

Outside of the game-center addition, I see no difference unfortunately :(

The autosensor to turn the screen off during calls does not work... still. VERY frustrating. iPhone 4 32GB with iOS 4.1.

Upgraded and got 15 days worth of missing voicemails. WTF!