Splaaat:

I insert the card till it kind of snaps into place and the button pops out, right?

That should do it.

Splaaat:

It is almost impossible to find a Flash Card under 4GB

The H8000 does not have the card size issues that Eclipse used to have, but we have little experience with very big cards.

Splaaat:

is the Flash card the only way to upgrade the OS

It is for this release – sorry.

I suggested you just send the card and adapter, cos that will be much quicker and cheaper, and if it does not work for you, no loss.