After a Google Search, found this:
USB Boot
By default, USB booting is disabled. Once you are in Dev-mode and have a root shell (Ctrl-Alt-F2), you can run:
sudo crossystem dev_boot_usb=1
and reboot once to boot from USB drives with Ctrl-U.
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I will try my best to be as detailed here as possible as I sense your frustration and disbelief in the time I have spent attempting to research and solve this issue.
Up to this point I have been unsuccessful in accessing Dev Mode. I have tried all of the following with 2 different keyboards, and please keep in mind my box was not a dual boot box. I booted directly into Openelec.
With the box off , I have pressed a paperclip into the box, then powered on, and then released the paperclip. ... didnt work
Tried same as above but held the paperclip in the hole until I saw SeaBIOS at the top of the screen... didnt work
The methods listed below here have been attempted with and without the paperclip method listed above.
power on and hitting
ctrl+Alt+f2.... or
Ctrl+alt+f3.... or
Ctrl+Alt+T.... or
Ctrl+alt+D.....or
Esc
all gave me the same negative result . Here are pics of what I am seeing. I have also attempted to use the commands you suggest from this screen, and this was the result. I am trying everything I and find.
im ridiculously stuck.