Just received new 998 HD SI w/version 6.68. I have an existing 898c si on console w/version 6.49 installed, and am happy with its performance. GPS puck is AS GR50 on rear deck. I understand the 998 will recognize AS-GPS HS. Will the 898 recognize AS-GPS HS as a regular GPS, thereby not having to update software. I don't want to change software, therefore no Ethernet. Would like option of swapping head locations.