MERU MC4200 config

[Tinribs]

Hi All

We have a MERU wifi network. Our controller died and Fortinet have given us a new one. In order to get it working we have to downgrade the firmware so it will work on our APs

The procedure to downgrade is simple on paper. Boot into linux recovery. Connect to an FTP server with the file on it and the box does the rest.

I've managed to get connected and authenticated to my own FTP server. Next step is to navigate to the file and do an mget. Problem is any command I give be it ls, dir or Mget causes the connection to time out.

I'm connected via the network using cable. My PC and the MERU are on the same subnet and can talk to each other pingwise plus I've connected and authenticated. All the relevant firewall app and port rules that I am aware of are in place.

I'm hoping this is straightforward - how can I stop the connection timing out when I run a basic command?

TIA