Un-noticed by me in late summer 2020, the expert Python coder ‘Structure’ kindly uploaded most of the official ‘Service Release’ or ‘SR’ patches for Smith Micro’s Poser, which is now the legacy version. The various service pack installers for older Poser versions are now to be found via these links which lead to a handy Dropbox cache.
Be sure to check version numbers and make sure you’re not actually downgrading. For instance, 2014 had an SR5.1, 5.2 and 5.3 and yet only the SR4 is available from the above links.
Why would a Poser user want to still run such antiques, when we have Poser 11? Partly because we can — they don’t “phone home” and don’t expire and will run as long as Windows can. This also means they can run offline. Partly because they can run old PoserPython scripts which have since become defunct, even as far back as GlowWorm which required Poser 6 SR3 (you may need to switch from OpenGL to SreeD to be able to operate Poser 6 these days). Sometimes they’re required to load certain legacy content, which can then often be exported for a more modern version or at least to an .OBJ file. Sometimes related creative software requires a certain version present in order to import 3D models from Poser, such as MojoWorld (Poser 6) and MotionArtist (Poser 2014) and the old Vue Complete (for export/import it apparently needs Poser Pro 2014). Also, some people run the Smith Micro PoserFusion plugins that let Poser send scenes to Cinema 4D, 3DS Max, Lightwave etc.