A upb file extension is related to the firmware update files for Mvision satellite receivers.
UPB file extension - Mvision firmware update
What is upb file? How to open upb files?
File type specification:
The upb file extension is associated with the satellite receivers developed by the Mvision company.
The upb file stores firmware update for Mvision satellite receivers.
Seems to be obsolete file format.
This upb file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.