[gguruusa]

GPS radios load into a different area than non-gps radios. We don't know how to clear this area yet, though you can overwrite it with a vogue gps radio. Hence, you can't remove a gps radio once it's installed.

As to radios vs OS roms, radios are much more low level and therefore much easier to render your device into a brick when it goes bad. OS roms load late in the process, and therefore don't usually cause unrecoverable problems.

While the hardware is similar between titan and touch, it's clearly not identical. It is hard to predict what the effect of software that expects hardware to be present will do when the hardware doesn't exist. This can be anything from nothing to increased battery drain to slowly destroying flash to shortened hardware life to immediate smoke release. Some people have already demonstrated that immediate smoke release doesn't happen with titan radio on touch, but only time will tell if something more slowly destructive is occuring.