Updates?

IS there a way to shut off automatically updating the 66i?  i recently purchased one and scheduled a trip to test  sending messages, as i will be need it for a trip where i will be out of service for a month or so.  i did all the updates before i left for my trip. Once i arrived, it downloaded an update that broke my birdseye downloads.  well, the update that just downloaded fixed the problem, which is fantastic timing as i am now headed back to the airport...

So, is there a way to shut off 'automatic updates'

thanks