Index of /pub/ADSL/DSL-2750U/Firmware. This firmware is only compatible with hardware revision С. Please take a look at string "H/ D-Link FTP D-Link | Technical Support | Downloads
Yes, if you perform a factory reset after the update (which you should). Always back up settings first. dlink dsl2750u c1 firmware install
Access 192.168.1.1 in your browser to find a simplified "CFE" upload page. After the Update Index of /pub/ADSL/DSL-2750U/Firmware