[Q] Need for a tutorial to enable Diag Mode and backup NV Data on AOSP Roms? topic

First of all, I am very new to this forum so I am sorry if this is the wrong place to ask. Thank you. :)
The Question I asked myself was, is there a way to restore your IMEI und NV Data on an Custom Rom like CyanogenMod where the *#0808# or other codes don't work. And the answer was in this threat http://forum.xda-developers.com/show...626638&page=11.
But for me it took 3 to 4h to fight myself through the wrong drivers, different settings and so on.
Plus because of EFS-Professional you can skip the first part and automatically change it into Diag-Mode.
Yes, I do not have a lot of experience but maybe sb with experience can write it. I think it would be nice to have a tutorial where it is explained step by step which would make the back ups of IMEI and NV Data a lot easier on Custom Roms. :)
I would like to talk about the idea and I am just putting it in the room. :)
Thank You

How to access DIAG mode in AOSP? topic

I'm running Task650's ROM and I need to get into DIAG Mode. What do I do? When I run a script in script manager, it says that it can't create a file because the directory does not exist. Any workarounds?

[Q] Help can't access diag mode LG G2 D803 topic

I can't get into DIAG mode when I enter ##3424# (##DIAG#). Is there a different sequence for the D803 model? Or is there a manual way of getting this device into diagnostics mode?
I have all the drivers downloaded and device manager shows under Android USB Devices AndroidNet Sooner Single ADB Interface)
and under Ports shows LGE AndroidNet USB Serial Port (COM8) which is exactly what I want just can't seem to get DIAG mode to work.
Thanks in advance for any help.

Enabling diag mode in CM11 on Nexus 5 topic

Has anyone figured it out on how to enable diag mode in Cyanogenmod 11 on Nexus 5 yet? If anyone can share it here, it would be a great help. Thanks.

Sent from my Nexus 5 using XDA Premium 4 mobile app

Please Help! Need S3 to go into DIAG mode topic

My friend tried to flash the custom rom I am using on his s3 last night. Some reason it corrupted his efs folder and his imei became null/null. We flashed him back to stock rom with ODIN and IMEI change to the generic 040999....we were up all night searching for a fix and have tried everything from modem files to azira patch.

there is one solution that will fix it by repairing the nv file using NV-items reader writer. The problem is the phone needs to be in DIAG mode (DM Mode) for it to read the phone. Until now I have not found a way to get it. ##3424# does nothing. *#7284# only gives me QUAL (modem pda) and USB (Modem pda) there is no qualcomm settings where I am meant to enable diag mode. I have tried the scripts that apparently enable diag mode but to no avail. I did find a code *#9090# which brings up DAIG menu but when i select LOG VIA USB it says "LOG PATH SET FAIL"

So is there anyway I can get this i9300 into DIAG (or dm mode) any help will be much appreciated