How to repair a split zip file?
The internal data and structures of split Zip files are identical to those of spanned Zip files. The only differences between them are the names of the parts of the file, that is: Each part of a split Zip file has a different extension (such as ‘mysplit.z01’, ‘mysplit.z02’, etc., and ‘mysplit.zip’ for the last part). While all parts of a spanned Zip file have the same name (such as ‘mysplit.zip’).