Dell 4320 Projector - Manual (Page 91)

Firmware Upgrade
Use the Firmware Upgrade page to update your projector’s wireless firmware.
NOTE: Please disable and enable wireless/network using the OSD to restart
the network card for the projector after firmware upgrade is successful.
To start the firmware update, follow these steps:
1 Press Browse to select the file to update.
2 Click the Update button to start. Wait while the system updates the firmware
in your device.
CAUTION: Do not interrupt the update process as this may cause the system to
crash!
3 Click OK when the update is complete.
Using Your Projector 91