Ke2yk
From The RadioReference Wiki
I received my new GRE PSR-700scanner yesterday and found programming it to be fairly easy.
However, I was surprised when I found out that the programming steps were not done as I had anticipated.
It's true that firmware updates can be done using the software and the supplied USB cable.
Here's the surprise: All other programming requires that the SD card be inserted into the computer.
Of course Radioreference has the most comprehensive information about the PSR-700