Hi I got my new P# Advanced today. Updated remote no problem. Copied 1.08 firmware to MCSD and started phantom. The units makes the read sound about every second or so . The first time I tried the battery ran down below 15%. I stopped the upgrade after 3.5 hours. I am trying again with a different sd card and fully charged battery. 3.5 hours plus to update firmware? Any ideas? Front lights steady red. Back lights flashing rapidly - yellow.