First way:
First You have to instal 7zip ( http://www.7-zip.org/ )
All download files must be in same folder!
Then see picture:
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Second way:
Download HJ Split
All files must be in same folder.
See Picture
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- First open HJSplit
- Select Join
- Hit browse and navigate to the files
- Select the .001 file and click JOIN
- DONE