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***Tom - Raymarine - Moderator***

Hello Popeye46,

That sounds like you probably have either a C120 Classic or E120 Classic. If that's the case, software and update instructions are at http://www.raymarine.com.au/view/?id=3751 and http://www.raymarine.com.au/view/?id=3753 respectively.

The problem you'll have nowadays is finding a Compact Flash card that's small-enough capacity that the simple software upgrade bootloader can access it reliably. C & E Classic MFDs tend not to be able to be software-upgraded from cards larger than around 128Mb. That's tiny by today's standards but was big when these displays were designed. Cards of that size are very hard to find now, you may be best getting your local technical dealer to do the update for you, if the display needs one.

Attempting the upgrade from a larger capacity card won't damage anything, it just probably won't even start the upgrade process.

Regards,
Tom