[LG G Flex 2] Raybo58:
Hello everyone,

I bought this phone on sale last year and it was advertised as follows...

Refurbished: LG G Flex2 H950 32GB Unlocked GSM 4G LTE Octa-Core Android Phone

In browsing the forums here I see the excitement around this phone has waned quite a bit since it's release, but I'm hoping there's still a few of you left who might be able to help me. I totally love this phone and want to be able to use its full potential.

It's branded as an AT&T phone when the boot-up screen appears. I doubt it was sold as unlocked by AT&T, but rather Newegg, or someone they're reselling for, unlocked it. I've never been an AT&T customer. I bought it knowing I could use any carrier willing to sell me a sim card. I'm currently using Mint.

It came with the 5.01 firmware. I've spent many days reading every thread I can about how to upgrade it, and possibly get Marshmellow as well. The issue is that I can't seem to find any drivers that function properly. Here are all the ones I've tried...

The only one that's come close to fully functional is the top one for version 3.11.3.0 It's the only one that recognizes all of the sub-devices no matter how many times I unplug the USB cable and plug it back in. The only other one that came close was version 4.2.0

I use a program called USBDeview, which provides live monitoring of USB connections and shows a great deal of info about each one. In the images I'm going to share, I've shrunk away all of the columns except the ones I think are most relevant. The ones with Green dots mean it sees them as a working, connected device. The ones with Gray dots mean that there is a record of this device connecting, but that it does not see them as currently connected. And the Purple dots mean it sees the device as connected, but that there is some issue with its functionality.

Here's the result when I use the 3.11.3.0 driver...

All 5 devices show green and everything action I've tried to perform from studying guides here works perfectly. And, as I said, it keeps working no matter how often I reconnect it. The only weird thing is that USBDeview reports the version as 3.11.0.0, even as the filename and the file properties report it as 3.11.3.0 It reports correctly for all the other drivers I've tried, but I guess it's nothing to complain about at this point.

The problem is that whenever I put the phone in “Firmware Update/Download Mode” I get this result...

The LGE Mobile Sooner Single ADB Interface driver now shows as disconnected, and as such, I can't send any ADB commands and my device doesn't show up on the list when I type "ADB Devices". It doesn't indicate there is a problem, it just shows it as not there. This issue is thwarting all my efforts to upgrade the phone.

With the 4.2.0.0 driver, I get a similar, but slightly different result. Sometimes I got this when connecting the phone in normal mode...

And other times I got this...

I can't account for the different results because I was trying all kinds of tweaks and fixes between different attempts. But one thing was universal with this version: They would all show green for up to a minute or so and then all but one would start disconnecting until it looked something like this...

The other drivers I tried were similar. Some recognized more devices, some less, and some would look like the above on their first use. Some were consistent and some would look okay for a minute and then disconnect.

When it came to Download Mode, some would see the ADB driver and some would see the USB driver, but I still haven't found one that will see both. When I check the error logs, I most often see something like this...

So if anyone has a driver that they know works on this phone and has definitely used it to upgrade this model in Download mode, please let me know.

Also, if you know of a method to accomplish my goal without using Download mode, please point me to some steps to that method.

Just to avoid the obvious advice, I've tried a great many fixes...

Turned off Fast Startup.

Disabled ability to turn off device for power savings on all USB hubs.

Disabled USB Selective Suspend.

Disabled firewall and all other protection settings in Windows Defender.

Uninstalled my anti-virus.

Disabled Windows automatic device updates in Group Policy.

Made sure all my other devices have the latest drivers.

Update my BIOS to the latest version.

Windows 10 Pro is up to date.

As one person advised, tried to manually update the devices that wouldn't connect using lgx64bus.inf from the driver folder.

And various registry tweaks.

Thanks in advance for any help.

NOTE: In going through all the drivers again, I discovered that version 3.14.1, at least on the surface, is performing exactly as ver 3.11.3 has been. Works perfectly in normal mode, missing ADB device in Download mode. Guess I skipped it in my first few runs. Still doesn't solve my problem, but I strive to be accurate.

NOTE 2: I have found a method for flashing that does not require ABD to flash my phone. I can't find an option to delete this post, so the moderator has my permission to do so at their discretion.