For USG series
Upload ur license file to the device and Active it, That's all.
If u want online download the latest AV database or IPS database or URL category database,
U need register ur device esn code on sec.huawei.com (If the system inform u the esn is not available, U can contact Huawei TAC to help )
For Secospace SOFTWARE (TSM DSM PSM VSM ELOG.......)
Just upload license file, that's all u need to do