Toshiba 13A21 Service Manual page 47

B. IC504 X226
Setting up ISP Connection for ATSC (IC504)
1. Power off mode plug in USB Hard driver on CN3001
2. Turn on DC power then select source to DVT you can see the message
Note:
a. When IC504 is empty need copy xxx.pol file to USB Hard driver
b. When update firmware need copy xxx.udi file to USB Hard driver
c. USB Hard driver specification
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