He looked at the algorithm that generated the keys. It was a simple modular arithmetic used in legacy versions. If he calculated the difference between the two keys mathematically, he might be able to generate a "bridge" key—a temporary token that satisfied the v2 security check by acknowledging the v1 authority.
for installation. Unlike standard software updates, the transition from RS-BA1 Version 1 to Version 2 is a paid upgrade and requires purchasing a new software package, typically delivered on a USB flash drive or CD. License Key and Product ID Overview Location of Keys rsba1 version 2 license key updated
Most legitimate software now includes a built-in license update feature: He looked at the algorithm that generated the keys