you all can download the latest update files on Kaspersky own site.

ftp://ftp.kaspersky.ru/bases/av/avc/symbian
http://dnl-eu13.kaspersky-labs.com/bases/av/avc/symbian/

1. Copy and paste this link in Internet Explorer's ato mozilla firefox in the address bar.

2. you are automatically prompted to save or open this file (kav20sym.avc) store.
3. Change the name to b.dat

4. Move it to your phone.

5. Copy the X-Plore or third-party file manager other reply to this directory:
If you install KAV in the phone memory (C: \ system \ Apps \ KSmobile \)
If you install KAV on Memory Card (E: \ system \ Apps \ KSmobile \)

6. Enjoy

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