Hisense LTDN24K26CEU Service Manual page 16

4.1.2 Install the ISP_TOOL4.5.0.4-------only for the first time update.
1、The software is upgraded by a burning tool- ISP_TOOL.exe
2、Find the folder where the ISP_TOOL4.5.0.4 lies in.
There are three folders/files in this folder together.
DLPORTIO.dll and FTD2XX.DLL must be in the same folder
3、Double click the ISP_TOOL4.5.0.4 icon, and then a dialog window will show as below.
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