Hold it down for 10 to 15 seconds until all LED lights flash simultaneously, then release it.
: Navigate to the official D-Link Middle East website ( ://dlink.com ). Search for "DSL-2750U" in the support or download section. D-link Dsl-2750u Firmware Me-1.30 Download
Added support for various D-Link USB modems, including the DWM-156 (A7), DWM-157 (B1), and DWM-158 (D1). Hold it down for 10 to 15 seconds
Visit the official D-Link Middle East support website or an authorized local D-Link repository mirror. including the DWM-156 (A7)
