Help Galaxy Note 10.1 stuck in "Factory Mode"

[mtcstle]

Through an unfortunate sequence of volume/power key manipulations, my Galaxy Note 10.1 entered "Factory Mode" and won't come out. This is evidenced by a semitransparent panel superimposed upon the "home" screen with a list of hardware information and by a message I saw only briefly during one restart that stated in red, something like "...in Factory Mode...". I've done done a "factory reset", goodbye custom settings, but to no avail. Does anyone know how to exit "Factory Mode" on this device?

 

[RonJohnson4164]

Try holding down the power button while touching the screen. You must do this for at least 30 seconds.

 

[mtcstle]

Thanks for the suggestion but it did not help. It just cycled through the initial start up screen four times, during the thirty seconds and finally started in Factory mode again when I released the buttons. I read somewhere that if I rooted the machine and edited /efs/FactoryApp/factorymode from OFF to ON, it would correct the problem. I followed some pretty good directions and I think I've successfully rooted the tablet. I've verified that /system/xbin/su is rwsr-sr-x root:root but I keep getting permission denied when I "echo -n ON > /efs/FactoryApp/factorymode". It is perhaps of note that when I su, my prompt remains "$" although I see a message that the shell has been granted superuser privilege.