The Navsync CW25 crapped its pants when rollover occurred.  It (and a lot of 
other Navsync devices) have a known firmware bug where they stop tracking sats 
if the week number is 0.   Sure enough, at zero hour, all the sats disappeared.

Conner Winfield has firmware updates for the problem receivers.  The updates 
are in .rar format files that require winrar v5.x to unpack.  See:
    http://www.conwin.com/pdfs/gps_week_rollover.pdf

So, I uploaded the new firmware... which went well.  The new firmware does 
enable the ability to set the satellite elevation mask.    At first the new 
firmware was still not tracking satellites.  It took 10 hours before it started 
working.
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