To flash the D-Link DSR-150 router, take the following necessary steps in steps:
1) Let’s look at the revision on the label under the router and download the new firmware from it from the official site
2) Open the settings of the router by typing in the browser the address http://192.168.1.1 (maybe 192.168.0.1) and enter the standard login – admin, the password – admin.
3) In the opened interface at the top, open the “Tools” tab, on the left, select “Firmware“. On the page that opens, the current firmware version will be displayed, if it is older than the downloaded one, then click “Browse” and select the previously downloaded firmware file, then click “Upgrade” to start the process updates.
Wait until the update is complete, usually 2-5 minutes. At the end, the router will reboot.