You can find a firmware update here:
Here's a picture of where you can download the firmware from that link. The Double-Arrow shows the file to download, and there are instructions also on how to install the firmware update.
You'll have to launch the downloaded file, and let it install itself onto the thumb-drive, so just a reminder to go through the directions for the firmware set-up.
Hello Samsung, i bought Samsung UA40B7000WR in Thailand, and by mistake i downloaded firmware from US website for UN40B7000 and installed, now i cannot get video in Component and movie from harddisk is playing only for 5 minutes and goes off. Please help me how to remove firmware for UN40B7000 and reinstall firmware for UA40B7000WR. When i copied firware for UA40B7000WR in USB drive, it is showing no upgrade information found. Basically installed firmware for UN40B7000 is not allow me to change to firware of UA40B7000WR. How to uninstall UN40B7000 first ? and install for UA40B7000WR. Any help from Samsung is welcome. Thanks for your help.