I doubt if you could ! Normally, you're only able to upgrade hardware and software to a newer version. That would be like swapping your current car for an older model.
Sadly, you cannot downgrade an iOS device without installing illegal hacks.
You cannot downgrade an iOS device without installing illegal hacks.
At the moment iphone 6 runs ios 8.1.3
Sadly, you cannot downgrade to an older iOS version after updating unless you disobey Apple's terms and use illegal hacks.
The iPhone 5 will run iOS 6 or iOS 7.
Yes they do but remember to upgrade to the latest iOS version 6
Currently, as of 4/22/2013, the latest version is the iPhone 5 and latest iOS is iOS 6. The newest technology would be a bigger screen and faster processor, regardless.
Dont update to iOS 6. It runs bad on the ipod touch and when you jailbreak it, it will be only slower. I will downgrade to iOS 5.1.1 since it is the best for me right now.
You cannot downgrade any Apple products (legally). Also, I don't think there is an iOS 6 for Apple TV yet. I do understand though, it is confusing. The iOS version number for all other iDevices does not sync up with the version number on Apple TV for some reason. They might as well not call it iOS.
Probably not. The only OS for iPhone currently in beta is iOS 6. There are is no iOS 5.1.2 currently in beta and iOS 6 should be out within a few weeks. Unless a security hole in the current iPhone OS is found before 6 is released, don't expect an update to iOS 5.
Considering updating your iPhone forces you to update to the latest software available for the device, updating an iPhone 3GS now will update it to iOS 6.
If it's bricked it has to be restored by Apple to factory settings.