I have a client I need to upgrade from (MICS) DR5.0 to XC7.0. Do I need to use an upgrade tool or can I simply power down, install the new flash card and power back up? I believe I should be using a rel.02 sleeve. If I have to change sleeves from rel 01 to rel 02 can I back up the Dr5.0 and restore to the XC7.0?