Originally Posted by 0331
Sent from my Last Ever Samsung Device.
On the older firmwares there was an IOTHiddenMenu activity which you could invoke using
am start com.android.hiddenmenu/com.android.hiddenmenu.IOTHiddenMenu
command, but that doesn't work on 4.3
I know in AOSP there was a notion to turn into QPST mode by writing to kernel pseudo-files...
Engineers got to somehow be able to reprogram these phones, there's no way Samsung disabled this completely