MS345 (leon) in endless loop after flash.

Hello Ninjas.

This is a very good android forum so I figure someone here can set me straight. Here is the case file:


MS 345 (leon) Status/operability.


Boot = loop / Fail. (optimizing app 1/31)

Download/Firmware Mode = accessible

Factory Reset = accessible, but avails nothing.

Android MTP device driver installation (Fails.)

LGE Mobile USB composite Device (Installs)



LG suite cannot communicate with Device.
Flash tool will complete – but I cannot revert this an older version.

Phone uses a custom “Factory Reset” script/menu. Its all pretty whereas the usual stock android ones are text based only.

I use windows 7.


History :
( When it had original firmware

1. Brother Does his handiwork (Problem) phone hangs during MetroPCS logo Animation.
   
   
2. Factory Reset was not accessible (probably impatience!)
   
   
3. Flashed to later Revision of firmware from LG / Metro Rev b. to d.
   
   
4. Optimizing app 1/31 – goes to around 22, reboots before finishing. Endless.
   

I did not clear the update cache before/after flashing and my suspicion is that the phone doesn't have enough free space to do what it needs to re:moving operations Mind you, I'm a novice when it comes to the android realm, but i could not clear the cache due to the strange recovery menu LG uses.

At this point I reckon my options are :
1. Access the partitions directly using ADB / a partition tool and wipe the partition so I could flash it with the original OS.

Is this a viable option?

I have downloaded and installed Android Studio, and even tried the stand alone SDK windows package.


Here where my obstacles:
ADB cannot see phone. command:adb Devices)

People recommend putting phone into USB debug mode in Android>Settings. But that's not an option with a 'bricked' phone. I tried to manually install several drivers (for MTP) but none of them work, only the composite ones. But I didnt know whether MTP drive would be mandatory to access the partitions.

In my most recent attempt at fixing this phone, I've tried (or attempted) the instructions found on these pages:

https://tinyurl.com/ADBhowto
https://software.intel.com/en-us/xdk/docs/installing-android-debug-bridge-adb-usb-driver-on-windows
https://gsmusbdrivers.com/download/adb-fastboot-drivers/
https://software.intel.com/en-us/android/articles/intel-usb-driver-for-android-devices

Strangely even though I can use the flash program and operate on the phone, I still cannot use ADB to access the phone so I can wipe the partitions.

If anyone knows how else I could REALLY wipe this Android, or think I am on the wrong Path. Please, please help.


ps. This guy said I CANNOT revert to a previous OS:

https://androidforums.com/threads/unbrick-guide-lg-leon-lte-metropcs-lgms345-kdz-firmware.923914/

1.