Q: Is that possible to buy a AFPD to AF5 upgrade and Windows to Mac crossgrade?
A: Yes, this will be what you need to get http://www.ikarus-modellbau.de/onlin...3fb67.22961526
You will use the same usb interface or GC that you've been using for your AFPD.
Q: I was looking for a copy of Linux version but I can't find it.
A: The Linux version is only available for AFPD and you can get the download here http://www.ipacs.de/forum/showthread...12.11.2008-%29
Note that IPACS does not offer any support for the Linux version