Hello there!
You can do as follows to download the application identification signature database:
1. Log in to the Huawei security center (isecurity.huawei.com) and choose Signature Update > Signature Update.
2. Select the product type, series, name and version.
3. Click the Service Awareness Signature Database tab.
4. Download the signature database file. Click the download icon on the right side. The Detail dialog box is displayed. Download the signature database file in the .zip format.
For more details, please refer to the product documentation: