Problem downloading

Hi guys, I’m here because I’m trying to download UE4 but I have a problem.

The thing is, my PC is running on a 64bits OS but my Internet here is really slow (20~40 KBp/s) so I’m trying to download the engine on another PC (in another side with better Internet) but that PC is running on a 32 bit OS and the Launcher says that I need to update my system to a 64 bits OS.

How can I do to download on a 32bits OS?

Thanks for your help, and sorry for bad english.