So this worked a treat for me. Taken from another site
I just tested this: funkyfresh.samba (wasn't allowed to post the URL
First link, and it works fine once you set the screen to landscape.
Here a guide:
1. Download Samba Filesharing from above, sideload it, and launch it.
2. Press the button with the 3 horizontal lines on the remote and choose settings.
3. Set a password. Without a password the rest is greyed out. For test use 1234
4. Set screen orientation to Landscape, press back to exit and launch the app again.
5. Choose a username, default is SDCARD
6. Press back.
7. Press the button with the 3 horizontal lines on the remote and choose enable.
8. Wait a sec or 5. When asking for SU say YES, the app will exit to background.
On the windows computer:
1. Open windows explorer and choose connect to network drive.
2. Enter \\ipaddressofftv\SDCARD choose a drive letter, tick use different credentials and press OK.
3. In the username field enter: SDCARD in the password field: 1234
4. Press Ok.
You can choose to mount \\ipaddressofftv\usbStorage\<deviceid> in step #2 and thereby mount the harddrive directly if you don't care about having access to the rest on the box.