The is the specific code for a Main Board used in various budget and mid-range LED TVs. This board typically powers displays ranging from 32 inches to 43 inches (and sometimes larger variants depending on the chassis).
The Linux rt2800pci / rt2800lib driver expects to: hk.t.rt2861v09 firmware
(not just the board model), you may "brick" the TV, rendering it unresponsive. Always verify the panel sticker inside the TV casing before downloading a file from firmware archives. specific button combination to trigger a USB update for your brand of TV? The is the specific code for a Main