Default password for GL-AR300M16-ext in Sonos system


I just bought a used GL-AR300M16-ext from a guy on eBay. I’m unable to factory reset the device such that it presents the initial login screen as described here:

using the Repair or Reset procedures found here:

I’ve tried the password reset procedure at least 10 times but the device’s web page always asks for a password. The guy I bought it from said that the unit came with a Sonos system he got from Costco. I suspect the device has a custom firmware on it to support the Sonos implementation. Does anyone know what the default password might be in this configuration?

Thanks in advance!


Have you already tried this?

Thanks for the link. The updated youtube video is a LOT more helpful than anything else I’ve seen so far. Thanks!