: This is a sequence marker. It indicates that the original file was too large for a single upload or storage device and was split into multiple chunks (.001, .002, .003, etc.).
: This refers to 7-Zip , a high-ratio compression format. It means the data inside is compressed using the LZMA or LZMA2 algorithm. 3g2m.7z.002
: Choose "Extract Here." The software will automatically pull data from the .002 file as it works. : This is a sequence marker
Are you getting an like "Unexpected end of data"? etc.). : This refers to 7-Zip
The file extension represents a specific piece of a larger, split archive. Understanding this file requires looking at the intersection of data compression, multi-part archiving, and the likely nature of the content itself. The Anatomy of the File