The A-GPS file needs to be copied from your computer onto a memory card using a card reader or similar device. Once the file is moved onto the memory card you can put the card in the camera and update the file in the camera.
Be sure you are using a memory card that is not write-protected, that is freshly formatted for the AW-110, and that is on the approved memory card list for the AW-110. The list of approved memory cards for the AW-110 can be found on page 19 of the AW-110 manual.
A copy of the AW-110 manual can be downloaded from this address:http://support.nikonusa.com/app/ans...
If you continue to have trouble updating the A-GPS file on your camera please contact Nikon Support: http://support.NikonUSA.com