The .001 extension indicates this is part 1 of a multi-part split set (e.g., KIA.7z.001 , KIA.7z.002 , KIA.7z.003 ).
12 May 2020 — 7zip file with numbers on it like 001 means that you only have a part file of the whole compressed file. Microsoft Learn
Using 7-Zip, open or right-click the KIA.7z.001 file.
of this file (e.g., is it firmware, a game, or a document)? Are you experiencing an error trying to open it? How to Extract .7z.001 files - Microsoft Q&A
The .001 extension indicates this is part 1 of a multi-part split set (e.g., KIA.7z.001 , KIA.7z.002 , KIA.7z.003 ).
12 May 2020 — 7zip file with numbers on it like 001 means that you only have a part file of the whole compressed file. Microsoft Learn KIA.7z.001
Using 7-Zip, open or right-click the KIA.7z.001 file. is it firmware
of this file (e.g., is it firmware, a game, or a document)? Are you experiencing an error trying to open it? How to Extract .7z.001 files - Microsoft Q&A KIA.7z.001