Does anyone know if it is possible to download nvidia sdk manager on a 32 bit os?
What o/s did you have in mind? SDKM is designed for Ubuntu 18.04 on a desktop PC architecture. I suspect Ubuntu 18.04 is not available for 32-bit PC architecture, but even if it was, I also suspect some of the requirements for flashing would not function correctly on a purely 32-bit system. It would help if you would provide a use-case of what you want to accomplish.
We don’t support this case. Would suggest you use 64-bit environment.