A common question we get here at Avidyne is where to get a memory stick. Many customer want a spare memory stick for 'just in case' situations. Memory stick from 2GB to 16GB are available at your local computer store, office supply company, and large box retailers. The attached instructions on formatting the memory stick is for the IFD only, via a PC. For software upgrades, we highly recommend you review the size of the file before starting.