1. How do I adjust the brightness of Cosmos 4K SE?

Go to Settings > Display & Sound > Picture > Brightness.

 

2. How do I use manual keystone correction and zoom?

1. Go to Settings > Projector > Image Correction > Perform Manual Keystone Correction to perform manual four-corner keystone correction.
2. Go to Settings > Projector > Image Correction > Zoom to adjust the zoom level.

 

3. How do I find Cosmos 4K SE’s serial number?

Go to Settings > System > About > Status > Serial Number.

 

4. How do I find Cosmos 4K SE's MAC address?

Go to Settings > System > About > Status > Device MAC Address.

 

5. How do I factory reset Cosmos 4K SE?

Go to Settings > System > About > Reset > Factory Reset.

 

6. How do I restart Cosmos 4K SE?

Go to Settings > System > Restart.

 

7. How do I update the system?

Go to Settings > System > About > System Update.

 

8. How do I keep the screen turned off when I play music?

Go to Settings > System > Power & Energy > Power > Picture Off.

 

9. How do I use Bluetooth Speaker Mode?

Turning on Bluetooth Speaker Mode via the Menu:

1. Go to Settings > Display & Sound > Sound and turn on Bluetooth Speaker Mode.
2. Turn on your phone and go to Bluetooth settings, then connect to Cosmos 4K SE.

 

10. How do I pair Bluetooth devices with Cosmos 4K SE?

Go to Settings > Remotes & Accessories.

 

11. How do I update firmware?

To update the system version, go to Settings > System > About > System Update.

 

If you still have any questions, please contact Support@seenebula.com for further assistance.