I realize this question is purely hypothetical, but if the Froyo update does get "pushed" to my phone (I'm not seriously suggesting that it ever will!) and I see a prompt about installing it, should I at that point run it, or should I do a few things first to protect customized data on the phone? The user guide suggests that such an update would erase the contents of the MicroSD card, and implies that that you should unmount the card, and then remove it prior to such an update. Is that true? If so, would it be sufficient just to unmount the card without removing it? I don't like forcibly prying off the back (installing the battery was traumatic and I had to take 2 antidepressants afterwards) and having to exert pressures on the MicroSD card. Similarly, I'm under the impression that my apps might be erased, but that the Android Market keeps a list of them, and they will be easy to reinstall. And my Yahoo and Gmail are "synced", and so they won't be affected. Is my impression correct?