Hello,have dsl-broadband router D-Link DSL-2750B revision D1 with italian dsl ISP infostrada firmware DSL-2750B_1.01_WI_20141007_1246 in theoricly way this device should be accept LEDE,but in practicly way when trying install lede pop-up error that incorrect firmware version.How to remove stock firmware and install LEDE,to make this piece in to wifi-repeater?