hmm it seems more is broken. I did a reflash of rootfs.
I am at my parents so I had W7 x64 bit only. Was kind of tricky to find a solution:
http://talk.maemo.org/showpost.php?p...0&postcount=20
I had to manualy uninstall the driver W7 had selected first in order for the described steps to work.
Got the flasher and the kernel from here:
https://web.archive.org/web/20131117...maemo_releases
Now the phone is up and running again. It might be the cleanest way. Lots of tweaking the last couple of years might have messed it up anyway.
So now back to get Kernel Power and maybe thumb. Aaannd tweaking the os to lock and feel like before...

Thx for the fast response!