The community has developed OpenWrt support for this model. However, you cannot flash standard OpenWrt builds. They must first be encrypted using a special tool ( dlink-sge-image ), as the router's stock bootloader requires it. Because of this complexity, OpenWrt is recommended only for advanced developers.

To make sure you get the exact software matching your router's origin, please tell me you purchased your device in. If you are experiencing specific network issues, share what errors you are seeing so I can provide targeted troubleshooting steps. Share public link

This is a serious situation. First, try the : hold the reset button for 30 seconds while powered on, keep holding it while unplugging the power for another 30 seconds, then plug it back in while still holding the reset button for a final 30 seconds. If this doesn't work, you have a "bricked" device, which may require specialized hardware (like a USB-to-TTL serial cable) and advanced recovery procedures.

For the standard global or Russian-market models, you can find official firmware files here:

Flashing the wrong firmware can permanently damage ("brick") your router. Follow these steps precisely to ensure a successful update. Step 1: Verify Your Hardware Revision

As a responsible guide, I cannot embed a direct clickable link that may rot over time, but I can tell you exactly how to reach the official source as of this year.