Prota OS is available to download here: https://prota.info/prota/pi/
To decompress Prota OS folder, we recommend using "7-Zip" for Windows, and "The Unarchiver" for Mac. Please refer to this link: https://www.raspberrypi.org/documentation/installation/installing-images/
To write the image on your SD card, we advise downloading "Etcher". Make sure you are using a 16Gb SD card at least to allow Prota OS to run properly.
To configure your Prota Pi, please refer to our guide available here: Prota Pi Guide
If you encounter an issue, please contact our Support team.