See 'WikiDevi' @ the Internet Archive (MW XML, Files, Images)
upgraded MW to 1.30 - maybe things are slightly less broken
MT7620N + DDR2
Omega, if you're absolutely certain it only supports SDRAM + DDR1, please provide a source for the info. It's contradicted by both the datasheet and numerous MT7620N devices on here which seem to be using DDR2.