b & g zeus 3 doesn't seem to support grib file version 2

[barrymac]

Hi there,

I have used freely downloadable grib files from zyGrib on an sdcard to display weather data on a Zeus 3 chartplotter in the past. Now recently I've started using xyGrib which has more models available, many of which seem better than the typical GFS model, however they are saved as grb2. The zeus 3 chart plotter seems like it is happy, no errors are shown when I load these files, but no weather data is displayed when I set up the overlay.

Does anyone know a workaround for this? Perhaps there is a way to convert the format?

thanks in advance.