@korttoma
Thanx this is working perfect.

I was not able to upload a sketch with "arduino as ISP" so I whent back to my orginal idea to use a FTDI232(like I use for microPro).

I looked into the schematic on the nano and the micro. I found that on the micro the DTR pin there is a capacitor between reset and DTR input.. But the reset pin on the Nano did not. So I modified one FTDI232 with a capacitor 0,1uF (See picture).

When I also crossed the TX/RX pins it finally works :+1:

Thanx @hek

Where do I find these definitions and functions ?
Is there a list somewhere ?