http://buffalo.nas-central.org/wiki/LS_ ... ot_Version
shows some clues... it looks like it is just a small revision up from the previous uboot that they had for the LSProV2. In fact, the uboot for the LSProV2/LiveV2 also was the same for a few other models... the binary sensed which board it was on.
Is it not in the GPL archive? If not, maybe joergl may have an idea, or ... check in the back of your Owners Manual... there may a short bit there about GPL source.
edit: did you look here ? ftp://126.96.36.199/disk1/share/
there is a lot of stuff there... much
more than is shown on the GPL sources webpage... I'm not sure the UBoot source is in there, but it may be...
LS1 (foonas, nfs, Tranmission
print server, Firefly
for my Roku
Various LS-Pros v1,v2 (unbricked w/ serial & jtag)
KuroPro, LS2 & KuroHG (foonas)
Working on davysweather.dyndns.org
lately... => wooohooo!
Unknown command 'wooohooo!' - try 'help'