Softpedia reports many iPhone 3G owners are having trouble upgrading their phone to iOS 4. In some cases the upgrade doesn't work, others complain they lost data like the contact list or apps while some people claim the failed installation completely bricked their phone.
Using the screen name MiamiSteve, the author of the Apple Discussions forum post (IOS4 A Big Mistake...THE END) reveals that, after “countless restores [and] reboots,” he was still unable to upgrade his iPhone 3G to the new iOS 4. After calling up Apple tech support, he was allegedly passed to a manager with whom Steve claims to have “had a lengthy discussion.” The Apple customer made a summary of their conversation, as follows.
"*They, Apple, know they have a major problem with 3g upgrade to IOS4, they actually anticipated it. IOS4 was developed for things going forward, not backwards. There was a debate early on if IOS4 should even be included for the 3G. IOS4 was specifically written for IPhone 4. Future not past.
*He did not give me a solution on how to rollback to 3.1.3 because Apple does not support that type of fix. He suggested I purchase the IPhone4 or research online on finding a way to rollback.
*He said there may be an update/patch later but their concentration now is the rollout of IPhone4 and making sure those owners have the best experience.
*The IOS4 update was free to consumers. If we choose to use it, then we must be aware it is ‘freeware’ and there will be risks. Using IOS4 was not required by the consumer so they take the risk."