Will an iOS reinstall

1. Work on any jailbroken-iPhone and
2. Make a jailbroken-iPhone "unjailbroken"?
3. Make a jailbroken-iPhone "supported by Apple"?

Similarly, does such an iOS reinstall reset the iPhone (jailbroken or not) back to a "clean, factory default" state?

My near-term purpose: I have an iPhone 4S running iOS 5.1 I'd like to jailbreak to at least install better Google Voice integration like GVIntegrated.

Will an iOS reinstall

1. Work on any jailbroken-iPhone and
2. Make a jailbroken-iPhone "unjailbroken"?
3. Make a jailbroken-iPhone "supported by Apple"?

Similarly, does such an iOS reinstall reset the iPhone (jailbroken or not) back to a "clean, factory default" state?

My near-term purpose: I have an iPhone 4S running iOS 5.1 I'd like to jailbreak to at least install better Google Voice integration like GVIntegrated.

Will an iOS reinstall

1. Work on any jailbroken-iPhone and
2. Make a jailbroken-iPhone "supported by Apple"?

Similarly, does such an iOS reinstall reset the iPhone (jailbroken or not) back to a "clean, factory default" state?

My near-term purpose: I have an iPhone 4S running iOS 5.1 I'd like to jailbreak to at least install better Google Voice integration like GVIntegrated.

Will an iOS reinstall

1. Work on any jailbroken-iPhone and
2. Make a jailbroken-iPhone "unjailbroken"?
3. Make a jailbroken-iPhone "supported by Apple"?

Similarly, does such an iOS reinstall reset the iPhone (jailbroken or not) back to a "clean, factory default" state?

My near-term purpose: I have an iPhone 4S running iOS 5.1 I'd like to jailbreak to at least install better Google Voice integration like GVIntegrated.