Mag 254 problems!

[kermitii]

I have several Mag 254's all but 1 are working well! All have routes and mac addresses but the one will only boot up saying connect HDMI cable etc. then shuts down! Does anyone know how to do a factory reset maybe via USB so that I can enter all information again!
Thanks
kermitii

[Kimbo]

moved the thread from the files section, to here and here is how to reset your box http://iptvtalk.net/showthread.php?530-how-to-reset-your-box

[kermitii]

This don't work on the 254 as no buttons other than on the remote! Tried holding menu key with plug out an holding it as I plugged it back in powering it up but no luck! Must be a method for the 254 to be rebooted!
thanks
kermitii

[Jimae]

Press and hold the button that looks like this:
.___
.___
.___

just over the volume button on my remote