Which LS-WTGL do you have?
V1 with one usb port or
V3 with two usb ports
Which TFTP do you use? Link?
I have V3 with two usb ports
TFTP Boot.exe is from here: ftp://18.104.22.168/array1/share/nas-recovery/
and this file: TFTP Boot Recovery LS-WTGL-v3 3.08.exe
My device flashes seven times red led: Problem with motherboard (RAM, LAN, or Hard Drive controller)
So I do EM boot by pressing func button and powering on device. Blue led starts to blink.
After a while device turns on (fan and hdd's on) and red blinking starts.
TFTP Boot.exe doesn't pick anyting, but holding func again for a few seconds I got this:
Now NAS Navigator tells me devices IP eg. 169.254.219.10, so I change my IP to 169.254.219.1
Firmware and updater software are from Buffalos own download site: http://www.buffalotech.com/support/downloads/lswtglv3-310b.zip
lsupdater.ini looks like this after changes:
Title = BUFFALO LS-WTGL/R1-V3 Updater Ver.3.09
WaitReboot = 480
WaitFormat = 500
ProductID = 0x00003004
Name = LS-WTGL/R1-V3
VersionCheck = 0
NoFormating = 0
Debug = 1
Settings for lsupdater.exe
And updating stops...
Then some research with telnet