Back to search. Ubiquiti airOS Arbitrary File Upload. This module exploits a pre-auth file upload to install a new root user to /etc/passwd and an SSH key to. airOS-7 is the next generation of radio configuration and You can freely download the latest version of this firmware from Ubiquiti's website. Advanced airOS Firmware. airOS 7 is the next generation of Ubiquiti's intuitive and versatile firmware technology. airOS 7 now features.