I got a d-link go-rt-n150 router which i want to put openwrt for fun (along with my dir-860l). I disassabmled the device and seems similar to DIR-601L A1 ( https://wikidevi.com/wiki/D-Link_DIR-601L_rev_A1 ) but memory sizes differ. On the board there is 8WRGN62..0A2G instead of A1G so might be later edition.