Tutorial: Enable DIAG mode without SPC on sprint LG OG

[shreesh 406]

On latest LG OG there is MSL block on ##DIAG# ie ##3424#. On recent phones we are getting a "service code" prompt before we toggle anything. Once DIAG mode is achieved we can easily configure it.

To remove this block with simple command terminal. It may help to set "charge only" mode first and not the "MTP". We need to root it. Here is a link to root your phone

Be sure that LG drivers are installed- Download

Command:- su
echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable

If your phone was plugged into the computer already unplug it and plug it back in. You will now be in DIAG mode.
Your Windows Device Manager should look like this

If u want to script this then use script manager from play store then using widgets add a shortcut to homescreen. On app, menu button>new script and write the below script.

before launching the script be sure to toggle the SU button in the appthen hit save.

and while making a shortcut you may have to try twice.

Dont unplug the phone if using script. If it doesnt toggle diag for some reasons try running it again

STOCK ENABLE

Code:

margin: 0px;
padding: 6px;
border: 1px inset;
width: 640px;
height: 98px;
text-align: left;
overflow: auto">#!/system/bin/sh

echo 0 > /sys/class/android_usb/android0/enable
echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable
echo 1 > /sys/class/android_usb/android0/enable

STOCK DISABLE

Code:

margin: 0px;
padding: 6px;
border: 1px inset;
width: 640px;
height: 98px;
text-align: left;
overflow: auto">#!/system/bin/sh

echo 0 > /sys/class/android_usb/android0/enable
echo 0 > /sys/devices/platform/lg_diag_cmd/diag_enable
echo 1 > /sys/class/android_usb/android0/enable

AOSP ENABLE

Code:

margin: 0px;
padding: 6px;
border: 1px inset;
width: 640px;
height: 242px;
text-align: left;
overflow: auto">#!/system/bin/sh

stop adbd
echo 0 > /sys/class/android_usb/android0/enable
echo 1004 > /sys/class/android_usb/android0/idVendor
echo 631B > /sys/class/android_usb/android0/idProduct
echo 239 > /sys/class/android_usb/android0/bDeviceClass
echo 2 > /sys/class/android_usb/android0/bDeviceSubClass
echo 1 > /sys/class/android_usb/android0/bDeviceProtocol
echo tty > /sys/class/android_usb/android0/f_acm/acm_transports
echo diag,diag_mdm > /sys/class/android_usb/android0/f_diag/clients
echo acm,diag,mtp,adb > /sys/class/android_usb/android0/functions
echo 1 > /sys/class/android_usb/android0/enable
start adbd

How to Toggle SU button?

Special Thanks to MIKEex.