I'm trying to customize my Arduino Yún to work as an access-point (or hotspot) for providing services to clients directly connected and, alternatively, to work as a client on a wireless network for downloading resources from the Internet.
The access to such a wireless network is gained after the user submits a network SSID and password in the web control panel provided by Yún.
How can I recover from a user submitting a wrong password? At the moment the Yún stays stuck without any connection, and thus is unreachable via SSH to attempt any recover.