Upgrading to Volumio 1.5 without an ethernet connection

I’ve been happily running 1.4 for a while now with my wifi set up fine.

I use a Raspberry Pi Model A which has no ethernet port. In the past I would use my old model B to install the image and get the wifi up and running before transferring the SD card into my model A.

However, the model B is used as a webcam and is now inaccessible.

I’ve tried to change the /etc/network/interfaces file to the same settings as my 1.4 version, using a linux PC to read the SD card but this does not work.

Are any drivers missing from this version that were in 1.4, or has something else changed slightly?

I’m using a Ralink Technology, Corp. RT5370 Wireless Adapter (as listed using lsusb). I can’t remember whether I had to install any drivers to get 1.4 working.

This is the interfaces file that works fine for me from 1.4:

auto lo
iface lo inet loopback

auto wlan0
iface wlan0 inet dhcp
wireless-power off
wpa-ssid xxxxxxxxx
wpa-psk xxxxxxxxx

#auto eth0
#iface eth0 inet dhcp

Can someone post their interfaces file assuming that they’ve got working wifi, perhaps that will help me.

The new update feature will be a Godsend for me when I get 1.5 up and running!