AT&t is rolling out the Android Pie Firmware update for the LG V35 ThinQ on AT&T.
AT&T LG V35 LMV350 Pie UpdateAfter the Android Pie Firmware Update, your LG V35 will be on software version V350AWM20b, build PKQ1.181105.001.
The Update is now available via FOTA (Firmware Over-the-Air) only, Like many other AT&T devices, The Android Pie firmware for LG V35 LM-V350 in kdz format will not be available for download. So You can not install the Pie update by flashing KDZ firmware through LGUP.
AT&T LG V35 ThinQ owners who are not in the U.S. will not receive the OTA Update notification, You will need to use an AT&T SIM to get the Pie Update.
If someone on XDA can capture the OTA Firmware Update file (.up), You can use LGUP to upgrade your LG V35.
For your information, The Pie firmware Update for LG V35 also includes the May 1, 2019 android security Patch.