You can't write a printed manual about how to use the product unless you're pretty sure that's how it works.
Although, you probably still need to print a leaflet with updates between when you sent the manual out and when you finalized the software.
We used to achieve this balance with a manual.
A printed manual. Not a URL printed in 3 point Helvetica in light gray on a white background on a tiny leaflet in amongst a dozen similar-looking regulatory leaflets that will all go into the recycling bin when the new shiny shows up.