ATT LG V10 H900 stock kdz firmware H90021w

LG has released a new software update (Build H90021w) for the AT&T LG V10 H900 phone.

The update brings your LG V10 H900 software version to H90021W with latest Android security patches and bug fixes.

The ATT LG V10 H900 stock kdz firmware is also available for download from LG Server now. Those who wish to install the update manually can download the LG V10 H900 stock kdz firmware from below links:

Download ATT LG V10 H900 stock FIRMWARE



Anti-rollback Verison: ARB02



Software Version:V21W_00

OS Version:M

File Name:WEB_H90021w_00_0921.kdz

KDZ File size:1975697662

Download from Mega Mirror: H90021w_00_0921.kdz






The Anti-rollback Version of this firmware is 02. Do not try to flash this firmware if your phone’s antirollback version is 03 or higher.

How to download WEB_H90021w_00_0921.kdz from LG official server.

Download and Install XDM download manager here.

Copy “” and start a new download job in XDM Download manager.


The above stock kdz firmware for ATT LG V10 H900 can be also used to unbrick/restore your LG V10 back to stock. Please notes that the firmware works for ATT LG V10 H900 model only.

You can use LG UP to flash the kdz firmware. You need to install latest LG USB drivers, LG UP DLL for LG V10, LG UP software.