Today I was preparing a flt plan and the fmc shows data out of date.

Latest cycle is 1310 which came out Sept 19.

 

http://www.navigraph.com/FmsDataDownload.aspx

 

777 came with AIRAC cycle 1309.

 

There's a section in the Intro PDF on how you can change the cycle end date to get rid of that message if you don't want to update.