Need help disabling MLT through accessing LG Hidden menu through dialpad (AT&T H950)

Hi, I need some help reaching the LG hidden menu on my stock 5.1.1 AT&T G Flex2 (H950) in order to disable the battery-draining MLT service. I've read through all of the related threads to this issue, trying the combinations below.

277634#*#
3845#*950#

Some of the threads have recommended using a shortcut creation app such as QuickShortcutMaker, Secure Settings, and Shortcut Master, which I have all tried but all seem to require rooting to access the hidden menu. I would have no problem paying the for the Shortcut Master pro, but I have no guarantee that it will allow me to launch the hidden menu shortcut. I doubt that it will, as other apps that allowed me to create homescreen shortcuts have failed to open it.

I have triedLauncherPro to create a hidden menu shortcut to the homescreen, but still have not had success in opening it.

Has anyone found an alternate code for the dialpad to access the hidden menu without root or custom PR rom? This is on AT&T 5.1.1 that I received OTA through gophone. If anyone could help me out regarding this issue, I would greatly appreciate it.

H950 5.1.1 V11z Bricked/Bootloop: LG Security Error, Authentication Fail #9

Hello

A brief timeline of events leading to this thread:
1. I purchased a G-Flex2 H950 from Ebay for 0 and was supposed to be upgrading from a Galaxy S4-I337.
2. Received my device yesterday and set out to update to 5.1.1 & root the device to remove bloatware.
3. I was able to update to 5.1.1 V11x using my StraightTalk sim on AT&T network.
4. After many frustrating hours of trying to root using different methods, I finally was able to root using the technique mentioned in this thread: http://forum.xda-developers.com/g-fl...5-1-1-t3178354
5. A nice complement to point "4" above was the firmware update to 5.1.1 V11z.
6. Extremely happy that I was ready to rock, I set out to delete all the bloatware from my device.
7. First surprise obviously was the inability to remove a bunch of AT&T apps because "APK could not found" error.
8. Like the idiot that I am, I went ahead and deleted the "rootsystem.img" from the internal memory (unnecessarily, blame my OCD!).
9. Now after I finished de-bloating the device (or so I thought), I rebooted it and to my horror... I see the error message:

LG Security Error
Authentication Fail #9

10. I attempted to get to the recovery mode and deleted/erased all data & settings. No dice!
11. I'm still able to get to the download mode using the Volume-Up & USB connect method (& this is why I'm cursing myself at point "8" because I could have re-used the easy root method again to flash the img file).
12. I tried to use the "LG Mobile Support Tool", it recognizes the device correctly as "LGH950" but says V11z is the latest software update.

My question to experts: How SOL am I? I don't think LG would honor my warranty since the purchase is NOT from a authorized dealer/reseller. So no chance of warranty repair/replacement, no?

I looked everywhere (for close to 10 hours) for KDZ & TOT files to even attempt something. But I couldn't find anything for H950. Man, I hate AT&T so much now... Why couldn't they just leave the bootloader unlocked? Or LG (AT&T?)even provide the necessary files to start off with?

Could someone with more knowledge please offer any help? Meanwhile, I've pretty much resigned to be joining the queue full of others with bricked H950's...

AT&T H950 update and recovery problems

It's an H950 from the 0 ebay deal. I am on ATT service and the phone worked fine at H95010d

I contacted ATT customer service and had them pushed OTA software update to me. The first agent pushed H95011x to me, and things went wrong since then.

The phone cannot read the sim card (but no missing sim notice), baseband shown as unknown, if I press the "status" under the "about phone" page, the screen will flash black then go back to the about phone page.

Then I tried a factory reset. The phone started normal as if everything was fine, it just works on the first boot after the reset. But once I restart the phone, it went back to the same situation as above. I tried many times and the whole process is highly repeatable.

After that, I contacted ATT again, had the H95011z pushed to me, and it did not change the problem. Replacing sim card does not help, either.

Then I tried to get to those recovery methods on the forum, including installing the LGE mobile device drivers. But then under download mode, the phone (LGE Android MTP device) is shown as "this device cannot start (code 10)". Thus I was not able to perform fix with the tools.

I am kinds of stuck in the middle. Any help and/or suggestions would be appreciated. Thanks!