Hypothetically, would it be possible to dual-boot two firmwares. such as 1.1.2/1.1.3 or 1.1.1/1.1.3 or 1.1.1/1.1.2, and have the baseband of the older firmware. When the phone turns on there would be a screen that would ask you which firmware you want to run. Once you choose, the apple logo loading screen would show up and you would be set to go. Would this be possible?

Thanks,
DJ McG

P.S. I posted this in General and Native Software because I thought it fit in both.