How to access the service menu

Hello all,

For the G935F how is it possible to access and play around with the servicemenu?after *#0011# I get the initial screen but no further option no matter whatever I have tried
back
Q
back
0000
or back
Q0000

etc

Anybody managed to make it work?

from xda-developers http://ift.tt/29h3Cte
via IFTTT