Step to update software / firmware of Videocon d2h HD 6666 RF Set Top Box:
Step 1:
Switch on TV and Set Top Box.
Step 2:
Remove the Set Top Box power cable.
Step 3:
Press reset button of Set Top Box and insert the power cable in Set Top Box. Keep pressing reset button for 3 seconds after inserting power cable. The reset button (highlighted with red square in below image) is present at back of Set Top Box near power cable.
Step 4:
If there is a software / firmware update available then DVB SSU+S LOADER will start downloading the software / firmware update.
Step 5:
The TV screen will display the software / firmware download progress. Do not switch / power off Set Top Box or TV till the download process gets complete.
Step 6:
Upon completion of the software / firmware download, the Set Top Box will restart and display Videocon D2H logo for some time. This means that software / firmware update is in progress.
Step 7:
Upon completion of software / firmware update, Set Top Box will resume working in normal way
Step 8:
To verify the software / firmware update, go to Menu and open System Diagnostic. This will display all the system related details including software / firmware version.