Updatin RC435 from v01.04

[GreenGiant49]

I just bought a boat that has an RC435 installed that is at version 1.04. I would like to upgrade it to the current version of 1.11. I realize that this is an old plotter, but I hope that the answers are still available even though Raymarine no longer supports this model.

Can the version 1.09 upgrade be applied directly to the 1.04 version, following the 1.08 update instructions of doing the 1.09 boot code first, then the 1.09 system code? Or, would I need to update to version 1.08 first, assuming that version could be found?

Is the CF compatibility program still available so that I can determine if a particular CF card of <= 256MB capacity will work for this, or should I just try saving waypoints to see if it works?

One more question, what is the largest capacity CF card that this model will support? 256MB or more?