Good morning friends

I have a friend with a 2001 Boxter 3.2 L and a navigator version PCM 1 and 8 bits

Can you help me to find links for updating firmware and maps version???

which is the last version of 8 bits maps?? where are the links?

Can you tell me if it´s possible to update 8 bits software to 16 bits??

Thank you very much for helping me