Optoma PK-301 Service Manual page 31

(7) Choose "System setup"
(7)
(8) The "system Upgrade" will show,and
choose it.
(8)
(9)
(9) Choose "Yes".
4. Wait a few minutes until the projector
downloads finish,then the system will
reboot.
PK-30/PK320/PK30 PLUS
Confidential
5-4