[From 1/1/2019, manual update will be disable. We will need to use FCAR utility to make software registration, activation, download/update], please refer to here
F506, FCAR F3, F3S, F5 series scanner will be updated via FACR unitily, and also it can be updated manually as following steps:
On your windows PC
1) Open internet browser and login into fcar.com with your credential
2) Click on Download tab,
3) Select F3/F5 download