Sharp LC-20SD5E Service Manual page 19

RE-WRITE FOR DIGITAL SOFT FIRMWARE
9. Select the "Connect" from File menu.
10. Select the "Upload" from Process menu, and select the Software(CB00C76021.urt) in DTV ROM
DISC(JG176).
11 Unplug the AC cord on the set, then plug it in again.
12 Turn on the power.
The following window will appear, Up-date for Software will start.
"Uploading inprogress" bar will begin to move.
URT Files (*.URT)
C-6