I have an older Meridian Color and I recently bought a Meridian Color, and apparently de-WAASed both by wiping the memory per Magellan's written instructions. (I think there might be an implied warranty and consumer protection issue here in that they advertise WAAS-enabled and instruct consumers to do something that will de-WAAS the product, or at least not provide information on how to keep WAAS functioning, and it might not matter what they say about warranty periods and "legacy product" when it's a design flaw. But consumer protection assumes a competent producer/vendor, and I have my doubts about whether they know how to write a firmware update anymore.)
In each unit, AFTER the wipe, there were two files in the unit's memory: an approximately 16MB file that is the basemap, and a much smaller file (approximately 256KB) with a name like CRITMEM.MEM (The names were different for both units, but the sizes were very close.) It has occurred to me that if I, as a programmer, had to keep track of what satellite is sending a WAAS signal, I would probably store it in a file with name like CRITMEM.MEM. I would also probably store tracks and user-preferences and such in there, and it might get bigger with continued use. (I'm wondering if there are more files are stored in a unit that hasn't had a memory wipe, and what they are.)
So here's my suggestion: what if that small file were copied from a unit that got the WAAS-change notification to a unit that didn't? (Your post mentioned a friend with a more accurate GPS.)
and my request is that anyone with a WAAS-working Meridian send me a list of files and their sizes living in memory on their unit. (That data has to be in there somewhere, it's just a matter of finding it.)
I have a Meridian Color with v5.36 and another with v5.40 and I would be willing to update to another firmware if need be and if available. Does someone out there have a MeriColor with 5.40 or 5.36 and working WAAS (correct satellite numbers)? I would be willing to try uploading a CRITMEM.MEM file into my unit to see if this takes care of the WAAS-satellite problem.
There are numerous links to the How-to-backup-a-basemap on the web. Just make sure to ignore the part with Clear-All.
GWPouch
