AGPS is still working. But it needs a working internet connection. Try with gprs and/or wifi if you can.
Repeating the previous pages, trying to sum, a bit:

If [ you care about privacy stuff,]
then
just follow that wiki:
https://wiki.maemo.org/N900_GPS_Proxy
else
You can fill "supl.google.com" in the "Location server" field in Settings > Connectivity > Location > Network Positioning
And add "74.125.140.192 supl.google.com" (without the quotes) as new line in /etc/hosts
Evt reboot and verify Settings > Connectivity > Location > Network Positioning
Should work IIRC
fi