Maretron managed to fix the bug this week. I think they are last to fix this by weeks but they did. I'm receiving a Garmin
replacement today that I can put in the spares cabinet for now so that is good.
I checked the update and it works. You need to set the N2KAnalyzer "updates directory" to the directory you put this image file in and the Analyzer should then show v126.96.36.199 available.
This is a download link to my Dropbox; Maretron will some day work
out how to release it as a N2KAnalyzer update
EDIT: when you click the link you get a page saying you can't preview the file but in the upper right corner is the download link to get the .img file on your computer.