Python installation on offline computer

Question

I want to update my python version in an offline computer.

Currently the offline computer using the base env with coda version 4.5.4 and python version 3.6.5 I want to update the python version to 3.7+.

I installed on the offline computer the python 3.7.4 official installation for windows but I am not sure how to get the conda env to update to 3.7.4 as well.

Is it possible to get the env to update just by installing the official installation (that I already installed)?

If not, what is the correct way to update the python version?

It is a little problmatic to transfer files to the offline network so I prefer to be able to update the python version with the installation I already installed.

Thank you.