[LG V30 Questions & Answers] ChazzMatt:
Here we go...

1)

Download and install LG Mobile Drivers

to PC.

2) Download and Install Dev Patched LGUP to PC. See attached to this post or download link below. I am giving you the newest version. Read installation instructions below carefully.

3) Reboot PC. You have just installed two major components and your PC needs to recognize them.

4)

Download US998 20h KDZ

(stock firmware image) to PC. 2.8GB file. You will install this to phone soon.

Another mirror

if that is too slow.

5) Put phone into Download mode manually (discussed earlier in thread), while connecting to PC.

6) Open Dev Patched LGUP AFTER phone is in Download mode. Often with converted phones (former LS998, now US998) that's the best way for LGUP to "see" the phone.

7) LGUP will show what phone/firmware is detected. Should say "US998 10d". Choose UPGRADE mode and using the 3 dot menu towards the bottom right, navigate to the US998 20h KDZ file on the PC. (See attached screenshot at bottom. Yes, that shows 20a, but same principle. We are just updating to more current version.)

8) Click START on bottom left.

Will take several minutes, maybe 15 - 20. Do NOT unplug the phone until it says it's finished. Phone will reboot once, maybe twice.

If you look at the attached screenshots at the very bottom, the ONLY difference is you will updating US998 10d to 20h. The screenshot I have is updating to US998 20a -- which was what we had at the time.

These are the Dev Patched LGUP instructions I give to everyone. You probably don't have another version installed, but still read carefully. Like the SetDev.bat part and launching the program from the desktop icon, NOT the folder icon.

In this scenario you will be using UPGRADE MODE. The instructions below mention UPGRADE, REFURBISH OR PARTITION DL. Again, you will be using UPGRADE mode. Upgrade mode will KEEP your data.

________________

HOW TO INSTALL DEV PATCHED LGUP

0. UNINSTALL any prior LGUP version. Seriously. Go to Programs folder and delete the LGUP folder if you must.

1. DOWNLOAD THIS DUAL VERSION OF DEV PATCHED LGUP, made by [MENTION=2651082]tecknight[/MENTION]:

https://androidfilehost.com/?fid=11410963190603845019

(Or use attached file from bottom of this post. Thanks to [MENTION=2651082]tecknight[/MENTION]! Please

go here and click the THANK BUTTON

!)

2. Extract LGUP_DualMode.zip to a folder on your PC.

3. Browse into the folder and launch LGUP_Store_Frame_Ver_1_14_3.msi.

Follow the prompts to complete the install.

4. In that folder, right click and select "Run as Administrator" on "SetDev.bat" to set LGUP to developer mode. READ THAT AGAIN.

5. Launch LGUP using the desktop shortcut. NOT from folder icon!

As mentioned before, use UPGRADE, REFURBISH or PARTITION DL modes. REFURBISH and Partition DL are probably best. (In this scenario, we are using UPGRADE. This screenshot is from another thread. It doesn't apply to your phone. See screenshot at bottom for US998.)

WARNING: In LGUP do NOT go messing with modes not mentioned in these instructions. Especially do NOT use Chip Erase.

I don't care what anyone else tells you. If you listen to them, let them help you recover from messing up your phone.

https://9to5lg.com/lgup-1-15-manual-how-to-unbrick-restore-your-lg-devices-with-lgup/

It's all fairly easy. Most people breeze right through this. But if you have any problems, go through this list:

Make sure you in download mode BEFORE opening the patched LGUP file.

This is at the top of the list as some people forget to do that. The remainder are in no particular order. If that doesn't work,

Try different USB port,

Try different USB cable,

Try different computer.

Reinstall

LG mobile drivers on your PC.

Reinstall dev patched LGUP again.

Reboot the computer.