You can find the specific T3 files on the D-Link Russia Downloads Page .
The official source for this legacy hardware is the .
Never update via Wi-Fi. Connect your PC to one of the router’s LAN ports using an Ethernet cable .
In the web interface, go to System > Configuration and save a backup in case you need to restore your ISP settings later. 4. Installation Procedure D-Link Загрузки
Installing firmware for a different revision (like C1, C4, or U1) can permanently damage (brick) your device. 2. Download the Correct Firmware