To differentiate our tool we create versions based on BIRDs names .
Basically:
SEAGULL = ES-100
KINGFISHER = ES-200G
CUCKOO = ES-200G/D/B (currently in BETA state)
Our tools are in developing state all the time so new versions (read changelog on product page) introduces new features and fixes very often.
If you have further questions, do not hesitate to reach us through support@scooter-unlock.eu