Thanks for your fast reply.
My OS is iMAC Mountain Lion.
My iMac sees the Kindle, it it's in USB-Mode nice in the Finder (=Mac Explorer).
I used the original-cables.
Connected them before first reboot to copy the needed files, but can still connect, If I use Menue U in the TEQUILA - System Diags 126.96.36.199 on my Kindle.