Check D-Link's Resource Directory for specific versions like the ME (Middle East) 1.04R5B015 Beta. How to Use the Dump/Firmware File
Go to Maintenance or Tools > Firmware Update . Browse for your .bin or .img file and click Upload . Download Link DSL 2790U Dump rar
DSL-2790U Support Resources provides manuals, setup guides, and software. Check D-Link's Resource Directory for specific versions like