What key set to reboot a SIP 7960?

The image version is 8.9

# doesn’t work.

Thanks.

try google nxt time:

Note the file OS79XX.txt should contain just P0S30203 Once upgraded the reboot sequence is * 6 settings (all keys together)
The unlock / lock sequence is still **#

seems not working.
And to unlock, I use item 9 on main menu, with p/w cisco

Thanks any way