WikiDevi will be going offline 2019-10-31. For historical dumps of the database, see 'WikiDevi' @ the Internet Archive (MW XML, Files, Images).
Final dumps will be made available after the site goes offline.
There is no chance the data will not live on, in some form - even if it isn't 'WikiDevi' anymore. For example, see TechInfoDepot.
For a list of all currently documented Ralink chipsets with specifications, see Ralink.
OEM Gemtek WAPD-127GL (WAPD-127GL_V01)
WAP54GP serial numbers appear to start with MIN0.
The default SSID would appear to be linksys-g.