U-Boot VAMP 0.6 Pogoplug V4 (no replies)

I have a collection of Pogoplugs thank's to the great U-Boot on here, brilliant little devices.

I also have serial access on them all.

On one of them I run VAMP 0.6 as a music player, I have tried a squeezelite install on ARCH/Debian but it does not seem to work as well as the Fedora based VAMP image that they have created on Vortexbox.

As the E02 is getting harder to find, I have ordered a V4 device, I would like to stick this in the AV rack and use it as just a music player.

The VAMP install is based on a Doozan U-Boot with modified environments, I would love to get VAMP running on a V4 but I believe the U-Boot is different, will the environments script in this guide work? or will I brick the V4

http://vortexbox.org/forum/vortexbox/general/51318-install-vamp-0-6

/usr/sbin/fw_setenv usb_scan 'usb_scan_done=0;for scan in $usb_scan_list; do run usb_scan_$scan; if test $usb_scan_done -eq 0 && ext2load usb $usb 0x800000 uImage 1; then usb_scan_done=1; echo "Found bootable drive on usb $usb"; setenv usb_device $usb; setenv usb_root /dev/$dev; fi; done'
/usr/sbin/fw_setenv usb_boot 'mw 0x800000 0 1; ext2load usb $usb_device 0x800000 uImage; if ext2load usb $usb_device 0x1100000 uInitrd; then bootm 0x800000 0x1100000; else bootm 0x800000; fi'
/usr/sbin/fw_setenv usb_scan_1 "usb=0:1 dev=sda3"
/usr/sbin/fw_setenv usb_scan_2 "usb=1:1 dev=sdb3"
/usr/sbin/fw_setenv usb_scan_3 "usb=2:1 dev=sdc3"
/usr/sbin/fw_setenv usb_scan_4 "usb=3:1 dev=sdd3"
/usr/sbin/fw_setenv usb_rootfstype ext4

If it's a no go, what's required to get this image running on a V4, it looks a perfect device to run as a Squeezebox player, I am not bothered whether it will SD or USB boot, SD would be nice though.

Any help would be gratefully appreciated, keep up the good work :)