Is for 50L4333DG
1. Remove AC power from set by unplugging the AC power cord with viewingthe TV.
2. Place the file on a FAT32 formatted stick
3. Insert the “USB Drive” into the USB slot
4. Press the “VOL-“ button on the TV side and keep it pressed.
5. Plug the TV back into AC power while keeping the “VOL-“button pressed.
6. The Software upgrading process will begin. During the Software upgrade, the TV receiver will display “Software upgrade in progress”
The progress bar will be proceed after 3 minutes
7. Momentarily remove (~10 seconds) AC power from set by unplugging the AC power cord.Remove the USB drive from the slot.Plug the TV back into AC power.The TV should turn back on after 2 minutes
If it doesn't work, put the "exe" file posted below: