Given the ambiguity, I'll provide a general guide on how to safely download and install software on Windows, which you can adapt for Silver 6.0:
A: No. Silver 6.0 writes registry keys and installs kernel-level printer drivers. A portable version does not exist.
Because Silver is older freeware, it is not available on official stores like the Microsoft Store. You need to download it from third-party software archives. – many fake “download” buttons lead to adware.
(often misspelled as Silver), a popular bypass tool for iOS devices developed by AppleTech752