If the TV firmware doesn't update or isn't recognized, make sure that the USB flash drive meets the following requirements:
- It has a capacity of 4GB or less
- It is formatted in FAT32
- It has been tested on other USB ports on the TV.
- Some TV models have USB ports labeled Service, which is intended for firmware updates only.
Reset the TV
If the firmware still won't update with the USB flash drive, reset the TV.