[LG V20 Guides, News, & Discussion] redshorty4:
Thank you everyone who reached out the LG to express their interest in having the LGUS996 LG V20 be unlockable. LG has now provided a way, via their own website, to request an unlock key (unlock.bin) for the LGUS996 model of the V20. This unlock key can be used to unlock the bootloader.

*THIS WILL WIPE ALL YOUR DATA AND FACTORY RESET YOUR PHONE*

SKU Status

Only LGUS996.USA of LGUS996 (V20) for the US open market

LGUS996USATN - Unlocked (Supported)

LGUS996TNUCL - US Cellular (Not Supported)

You can find the steps and details on unlocking the bootloader here: http://developer.lge.com/resource/mobile/RetrieveBootloader.dev?categoryTypeCode=ANRS

While it does not, at the time of this post, state that the LGUS996 V20 is supported, I can confirm that the LGUS996 has been added the request page and that I have personally unlocked the bootloader on my LGUS996.

C:\Users\XXX\AppData\Local\Android\sdk\platform-tools>adb devices
List of devices attached
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
LGUS996XXX device

C:\Users\XXX\AppData\Local\Android\sdk\platform-tools>adb reboot bootloader

C:\Users\XXX\AppData\Local\Android\sdk\platform-tools>fastboot devices
LGUS996XXX fastboot

C:\Users\XXX\AppData\Local\Android\sdk\platform-tools>fastboot getvar all
(bootloader) version:0.5
(bootloader) variant:MTP eMMC
(bootloader) secure:yes
(bootloader) version-baseband:
(bootloader) version-bootloader:
(bootloader) display-panel:
(bootloader) off-mode-charge:0
(bootloader) charger-screen-enabled:0
(bootloader) max-download-size: 0x20000000
(bootloader) partition-type:cache:ext4
(bootloader) partition-size:cache: 0x4d000000
(bootloader) partition-type:userdata:ext4
(bootloader) partition-size:userdata: 0xced000000
(bootloader) partition-type:system:ext4
(bootloader) partition-size:system: 0x180000000
(bootloader) serialno:LGUS996XXX
(bootloader) kernel:lk
(bootloader) product:MSM8996
[B](bootloader) unlocked:no[/B]
all:
finished. total time: 0.211s

C:\Users\XXX\AppData\Local\Android\sdk\platform-tools>fastboot flash unlock unlock.bin
target reported max download size of 536870912 bytes
sending 'unlock' (1 KB)...
OKAY [ 0.039s]
writing 'unlock'...
(bootloader) Erasing userdata and cache
(bootloader) Bootloader Unlock key flash Success
OKAY [ 1.951s]
finished. total time: 1.990s

C:\Users\XXX\AppData\Local\Android\sdk\platform-tools>fastboot getvar all
(bootloader) version:0.5
(bootloader) variant:MTP eMMC
(bootloader) secure:yes
(bootloader) version-baseband:
(bootloader) version-bootloader:
(bootloader) display-panel:
(bootloader) off-mode-charge:0
(bootloader) charger-screen-enabled:0
(bootloader) max-download-size: 0x20000000
(bootloader) partition-type:cache:ext4
(bootloader) partition-size:cache: 0x4d000000
(bootloader) partition-type:userdata:ext4
(bootloader) partition-size:userdata: 0xced000000
(bootloader) partition-type:system:ext4
(bootloader) partition-size:system: 0x180000000
(bootloader) serialno:LGUS996XXX
(bootloader) kernel:lk
(bootloader) product:MSM8996
[B](bootloader) unlocked:yes[/B]
all:
finished. total time: 0.210s

C:\Users\XXX\AppData\Local\Android\sdk\platform-tools>fastboot reboot