How to upgrade to experimental?

Hi guys, can someone please tell me step by step instructions how to upgrade to experimental/production branch - I haven’t found that anywhere? I’m fairly new to this, but I know how to get to console on Raspberry, raspi-config, enable ssh, connect to Raspberry through SSH and FileZilla… Is it enough to download files of the experimental branch from Git and copy that through SSH to Raspberry (overwrite files?) or is there something else I need to do?

Some of my pages are not rendering and are being skipped, I’d like to test the different browser. Thanks in advance for help :pray:

Raspberry Pi 3B+
Clean install via image of Sprint8 - 2018-11-23


From the console, type this:

I would advise you to run the following command since installing from the image does not include all the latest packages and libraries.

sudo apt update && sudo apt full-upgrade -y