Firmware is a tv or decorder software that unlocks/unscrambles locked or premium channels you you won't pay monthly subscriptions. It is universal and works on any decorder or digital tv.
Installing DtB Firmware on decorder or tv:
Transfer or copy to a usb flash.
Under settings on tv or decorder go to software upgrade and choose usb upgrade.
Choose the Dtb Firmware and click ok.
wait for some time for the decorder/ tv to upgrade.
After upgrading, the decorder or tv will reboot and after reboot you will realize that all locked channels will have no key.
You can then click on any channel and watch for free.
The channels are now unlocked forever