I've tried to get the OEM FW for DWR-118 rev A2 from the D-Link support page (also linked on the WiKi), but it is not available, at least, I couldn't find it.
Does anyone have a backup of that image? Is it possible to download it from an untouched Factory router?
It seems, that OpenWRT support is less than ideal for this router for now (GB LAN port kind-of works with the snapshot version, the 5GHz WiFi provides less speed, than a 2.4 GHz)