Mine's the hardware model C1, I can't say if that's the case for all South African models, but that's the one that's been updated. If you think you have one of the other dsl2640u models, browse through the ftp folders to to find your version, for example:DSL-2640UDSL-2640UBRUCDSL-2640UBRUC2DSL-2640UBRUCBDSL-2640UBRUDGoogles translation of the Russian release notes###### RELEASE NOTE ###############Device model: DSL-2640UCompatibility with hardware revisions: C1Type the ADSL line: Annex A##########################Firmware Version: RU1.25Release Date: November 29, 2010File Name: DSL-2640UBRUC1RU1.9.zipFile Size: 3.4 MBHash sum md5: b780decd978f0f7ec58cedc0a78e9594Changes:1. Correction of errors PPTP-client to connect to a remote VPN-server over PPPoE interface, and MER.2. Correction of errors when trying to use PPTP-client as the default gateway.3. Removed lock SSDP packets from a wireless interface.Firmware Version: RU1.24Release Date: June 7, 2010File Name: DSL-2640UBRUC1RU1.7.zipFile Size: 3.5 MBHash sum md5: 75ebddfa4a8fb32a60ef4677aafa5d13Changes:1.

1. D-link Router Update Firmware

Apr 01, 2018  With integrated ADSL2+ supporting up to 24Mbps download With integrated ADSL2/2+ supporting up to 24Mbps download speed, g wireless LAN, firewall protection, the DSL-2640U provides not only the low-cost, D-Link DSL-2640T Firmware 20080725 1.0 driver download, Downloads: 9,619, By: D-Link International Pte Ltd, Size.

D-link Router Update Firmware

Fix for IPSec (DSL-2600U, DSL-2640U).2. All services modem (ARP, DHCP, ICMP, HTTP, FTP, TELNET) in the direction of the provider network is blocked, if the modem is running at Bridging.3. The web interface adds the ability to create static routes without the IP-address of the gateway.4. Blocked access to the device for Telnet using the account 'user'.Firmware Version: RU1.23Release Date: 03 feralya, 2010File Name: DSL-2640UBRUC1RU1.3.zipFile Size: 3.5 MBHash sum md5: 92b6043f4d3b093c2fc0d8a94b93abbeChanges:1.

Added ability to disable the client's TR-069 through a Web interface.Firmware Version: RU1.22Release Date: November 4, 2009File Name: DSL-2640UBRUC1RU1.4.zipFile Size: 3.4 MBHash sum md5: 7b27d6e6d737174d931244Changes:1. Changed the delay between sending the query when trying to install PPPoE-connection:Sending PADI - pause 2 sec. Sending PADI - Pause 4 sec. Sending PADI - pause 8 seconds. Sending PADI - pause 16 seconds.

Sending PADI - pause 2 sec. Sending PADI - Pause 4 sec. Etc.After every 17 PADI-query router sends a PADT.2. Added ability to specify the address of PPTP-server host name.3. Options: 'NAT' and 'Firewall' enabled by default when creating a MER or IPoA connection to WAN-interface.4. On the page 'Device Info' added information on the release date (Release Date).5. Fixed arbitrary changes to the MAC-address 02:10:18:10:10:016.

Added Keep-Alive for PPTP-client7. Automatically update the page and return to the home page after the firmware update procedure.Firmware Version: RU1.21Release Date: July 30, 2009File Name: DSL-2640UBRUC1RU1.0.zipFile Size: 3.4 MBHash sum md5: de233998866b680f9354b313ec3a413fChanges:1. Updated ADSL PHY driver.2. Security Update Web GUI.3. Change the spacing between sending packets when you try to PADI PPPoE-connection.4. Fixed problem that resulted in a router does not send PADR packet in cases where a network of 10 or more PPPoE-server.Firmware Version: RU1.20Release Date: May 6, 2009File Name: DSL-2640UBRUC1RU1.6.zipFile Size: 3.4 MBHash sum md5: 5a62fc749d18bed2dcdd38fc3964f573Changes:1.

If you use PPPoA-connection does not open some sites (corrected).2. Multicast traffic is now blocked by a wireless interface3. On Page Device Info WAN added information on the status of PPTP-connection (PPTP Info).4. On page Advanced Setup PPTP option added Always On.

If this option is enabled, in case of a break PPTP-connection, the router will restore it.5. For DSL-2600U/BRU/C Fixed error when using WEP-encryption.Firmware Version: RU1.12Release Date: January 20, 2009File Name: DSL-2640UBRUC1RU1.0.zipFile Size: 3.4 MBHash sum md5: fa0c8706f2c4a283ef7520633fabf069Changes:1. Dhcpc updated to version 0.9.82.

The algorithm works with SYN packets in networks of providers.3. Fixed bug with inability to activate the 'Bridge PPPoE Frames Between WAN and Local Ports' in the WEB interface.4. Added support for SNMP and TR-069.5. Added option 'Retry PPP password on authentication error' in the settings PPPoA connection.6. Fixed bug DHCP connection, does not allow PPP and MER PVC in parallel (for example, is important for service Mediazone UTC).Firmware Version: RU1.10Release Date: November 25, 2008File Name: DSL-2640UBRUC1RU1.5.zipFile Size: 3.4 MBHash sum md5: fcca9738fb0a6b3e9e2bc84f6ac6cbbfFactory firmware.

Another google translated documentHow to choose the firmware for the DSLHow to choose the firmware for the DSL-2640U?Before the firmware update procedure is necessary to clarify the hardware revision (H / W) of your device.order to correctly identify the hardware revision of the modem look at the label on the underside of the device. Find it on the line that starts at 'H / W Ver.:'. Letters and digits indicate the hardware revision.Examples:Hardware revision B2hardware revision D1hardware revision C1Downloading firmware for DSL-2640UAll firmware available on the FTP-server Company D-Link.Attention! Set the firmware version, not related to your device, can lead to unusable.for revision: A1, B1, B2Recommended Firmware:3 -06-04-3H00how to update the firmwarefor revision: D1Recommended Firmware:RU1.12how to update the firmwarelist of changesfor revision: C1Recommended Firmware:RU1.22how to update the firmwarelist of changes. Difficult to help with limited information.

You may get a better response from the forum if you post a new thread with a subject such as 'd-link router disconnects all the time' as this thread is more about a specific model and your issues could be more generlised - e.g. Noise on the line.Give details such as model number, is it wireless, is it the wireless part that disconnects all the time or is it connected by network cable. Some routers have an auto-disconnect feature for when the connection is idle. Can't tell you how to repair your router other than to press reset oe unplug it for 10 minutes.In my experience the dns and dhcp problems are not always the router's problem. I just had a similar issue with a Mega100 router where an XP pc with wireless USB dongle could not access the internet.

Instead of playing with the router or its firmware, I changed the primary DNS address on that PC's connection to be the same as the router's gateway address (the address you type in your browser when you want to login to the router setup). I left the secondary DNS blank. No problems after that.

Firmware DSL-502T Firmware Release Notesv2.00B12.AU200704251. Port redirection to a different port fix.2. LAN Client base IP restriction removed.v2.00B07.AU20060904. Fixed Status page Gateway IP address not shown. Fixed PPPD doesn't send PADT when doing'Save and Reboot'. Multiple port redirection fixedv2.00B06.AU20060808. Fixed firewall rule Ping from external network.

LAN Client valid range is restricted by the DHCP range changed. Fixed pinging both LAN and WAN IPs at the same time.

V2.00B05.AU20060710. Fix P2P lockups. Updated WAN page to give more connectivity options.