Warning: there are still many bugs in this project, and it's not working right now, welcome to join to improve it.
make && sudo make install
Test it:
insmod mt7603u_sta
depmod
You may also want to update existing old driver:
rmmod mt7603u*
insmod mt7603u
depmod
MT7603U_DPA_LinuxSTA_3.0.0.4_20140825
The original vendor driver can be downloaded from here.
and you can also refer the document for Ogemray GWF-1D07 300Mbps 802.11b/g/n MediaTek MT7603U WIFI USB Adapter. (It's in Chinese.)