Read Sharp LC-46DH77E (serv.man4) Service Manual online
LC-42DH77E/RU/S/V, LC-46DH77E/RU/S/V
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7. Turn off the AC power (Unplug the AC power cord). Take out the upgrading USB flash memory.
It waits for about 20 seconds until the AC power supply is turned off.
8. Now the software has been upgraded.
NOTE: Then get the set started and call the process adjustment screen 1/16 to check the main software version.
CAUTION: 1) Do not take out and put in the USB flash memory during formatting.
2) It takes about one minute to the rewriting completion.
Please confirm the upgrade status on the screen becomes 100%.
3) The AC power supply of the set is waited for about 20 seconds until off (The AC outlet is pulled out) after the upgrade is completed.
