Download-hctsw-wxmsoup-3beta6-update-lzma2 -

The string refers to a semi-offline update package for Windows 10 Mobile (specifically for the Win10 Mobile Semi-Offline Update Project ).

: The .lzma2.7z extension indicates the file is highly compressed using the LZMA2 algorithm within a 7-Zip archive. download-hctsw-wxmsoup-3beta6-update-lzma2

: To provide a semi-automated method to install Windows 10 Mobile build 10586.107 on legacy hardware. The string refers to a semi-offline update package