BBK LT2619SU Service Manual page 24

Find the folder where the ISP_TOOL4.0.9 lies in.
2、
There are three folders/files in this folder together.
DLPORTIO.dll and FTD2XX.DLL must be in the same folder
Double click the ISP_TOOL4.0.9 icon, and then a dialog window will show as below.
LCD TV Service Manual
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