My guess would be your Thumb drive is not working (at least for an Ai update)...You also failed to read the BIG RED message on the "Ask a question" page. What computer? What OS? for instance. There is a Knowledge base:
and in it there is a wealth of information. The issue's you are experiencing are covered in those articles...
If you are using anything other than a Sansa 8 gb (and even then you should FORMAT it Fat32) even the 4 gb white Sansa you may not have consistent performance. We went through multiples of them and found little consistency, so, are recommending the Sansa. I personally use a 230Mb jump I got from Yamaha at a class.
Try that and see...but make sure your using the latest update available in your "My Presonus" account, under your registered console, and follow the instructions there.