iPhone users in the US might have got the following message after connecting their iPhone to iTunes in the last day or two.
Before I answer that question, lets find out what's in the update.
As per Apple's knowledge base article:
So what's actually in the update?
As per MobileCrunch the update consists of 2 images, light and dark versions of the image on the top left corner, apparently, for AT&T's upcoming MicroCell service as seen below:
One of The iPhone blog reader who compared the older and updated carrier.plist has also confirmed the content of the update. As per a TUAW reader, Apple has also added settings for the Mobily network (Saudi Arabia) and Etisalat (United Arab Emirates) which might be true based on the news we had reported earlier in the week that Etisalat was to launch Apple's iPhone 3G in two largest Arab economies from Feb 15.
So what does it mean for iPhone users who have jailbroken and/or unlocked their iPhone?
After the problem iPhone users faced after accidentally updating their iPhone with firmware 2.2.1, an update for the iPhone message might have given you the creeps.
However, here is some information that might help calm some nerves. As per comments from few TUAW readers, they did not observe any issue downloading and updating the carrier settings, which makes sense based on the contents of the update, it is not a firmware update.
Jimbean, one of the their reader points out:
It looks like the Carrier update is in preparation for AT&T's upcoming MicroCell service. In case you are not aware of this service, here is AT&T's explanation of the service:
Unfortunately, there's still no word on price or availability but it could be an answer to improve your iPhone's 3G reception at your home or office.
Have you downloaded and updated the carrier settings on your iPhone? As always let us know how it goes. Please also drop us a line to tell us what do you think about AT&T's upcoming MicroCell service.