Please kindly be noted that we have released new firmware Version 3.3.2 of Vigor2820 series. You could download the formal released firmware and new documentation from following URL: https://www.draytek.com/user/SupportDownloadsDetail.php?action=Load&MID=12&ID=269

Please refer the new features and improvement.

New Features :
1. Support USB disk application (FTP/Samba).
2. Support wireless VLAN/SSID mapping function.
3. Support mirror port feature.
4. Support Secure Phone feature by using ZRTP+SRTP.
5. Support TwoCom DDNS services.
6. Support new models for 3.5G modem, such as Bandluxe C120/C170/C270, ZTE MF626/636, and support Option Icon new driver including Option 225 and HSUPA modem Sierra 881/885/888, Sony Ericsson MD300, XS Stick W12, D-Link DWM-652
modem).

Improvements:
1. Fixed: VPN DPD disconnect from remote side.
2. Fixed: DHCP server gives out invalid IP when subnet mask is not class C (255.255.255.0)
3. Improved:USB 3G stability for using P2P software.
For VoIP
1. Fixed: the problem of rebooting when using supplementary services.
2. Fixed: the problem of ISDN DTMF detection
3. Fixed: the problem for single codec and ISDN codec
For Wireless
1. Disable Ralink 11n RDG ( Reverse Direction Grant) function
2. Improved Wireless interoperability with Vigor AP700 when using WDS with WPA or WPA2 mode.

If you have further questions, please contact support@corecasys.com.