Ok.
I will try to provide maemaps with tracking if only I can get help
on how to tweak gpsd library in
Nokia 770 running 2007He + updated maemo mapper 2.6.2

The thread is already 2 years old

http://talk.maemo.org/showthread.php?t=24772

the same at Device > Nokia 770

Any chance for step by step working manual ?

The issue is what worked 2 years ago needs updating
as gpsd library got updates
and described procedure didn't work.