AT & T has just released the Android 6.0 M software update for the AT & T LG v10 (H900)
The Android 6.0 Marshmallow for the AT & T LG v10 (H900) is now rolling out to users across the country via FOTA (Firmware Over the Air).
Software update includes:
Upgrade to Android 6.0
Video Calling (IR94)
Advanced Messaging (IPME)
After the Update, Your device’s Software information displays:
Android version: 6.0
Baseband Version: MPSS.BO.2.5.c10.1-00014-M8992FAAAANAZM-1.41087.1
Kernel Version: 3.10.84
Build Number: MRA58K
Software Version: H90020j
The Stock KDZ/TOT firmware for AT & T LG v10 (H900) is not available for download.
Since AT&T host firmware on its own server, All ATT LG device supprts FOTA Update only.
So, You can not get the stock kdz firmware with IMEI.