If you use the USB 2.0 port on the back for NAS or print server:

Make sure to backup your settings before upgrading!"

: Recent releases like v1.22_ME Hotfix (originally released in late 2021) address critical unauthenticated configuration access vulnerabilities.

D-Link maintains a dedicated resource folder for the DSL-2750U Hardware Revision C which often contains the most recent .bin firmware files.