firmware is the official D-Link FTP server or regional support sites:
Ensure the firmware you download matches this letter exactly. Step 2: Download the Firmware The most reliable source for legacy
Browse the D-Link FTP Directory to find the folder matching your revision.
If you prefer open-source software, check the OpenWrt Wiki for DIR-615 or DD-WRT Wiki . Step 3: Update Process How do I upgrade the firmware on my router? | D-Link