how do i know when my P3 is finished with an update from the micro card how do i know if its even working?

The steps are slightly different depending on whether you have a P3 Av/Pro or a P3 Std.

For the Std, take a look at his video:


For the Adv/Pro, Sploodge has a thread providing detailed steps and procedures at:
http://forum.dji.com/thread-37122-1-1.html

There will be a remind in the DJI Go App if you update a Phantom 3 Standard . If you are updating a Phantom 3 Pro/Adv , please check the guide: http://dl.djicdn.com/downloads/p ... e_Guide_en_v1.4.pdf