[ROOT] H872 (up to and including 20g)

[laofan]

Looks like you got it working. Was just the USB/port problem?

Probably USB and port combined..
Both USB cables could get adb shell just fine. I have 3 USB ports on my laptop. Only the second USB Cable on third USB port that gets things done... 1/6 chance.

 

[cgregoryou]

Ya it's his 20f.

When he first dropped it somebody had gotten an error flashing it so I had held off until I had the time to take care of things if they went sideways. And I got that other stock without all of weakNPC's stuff in it but with my encryption issues those builds give me interesting issues. His just tend to work but I hadn't heard anything more on the error issue that person had

Sent from my LG-H872 using Tapatalk

Gotcha.. let me know if it works. I'm still rocking 11g. I just got the G6 to get back into the Android/rooting groove. Is it worth upgrading to Oreo or custom Pie?

 

[Ken C]

Gotcha.. let me know if it works. I'm still rocking 11g. I just got the G6 to get back into the Android/rooting groove. Is it worth upgrading to Oreo or custom Pie?

I'm running his stock 20e and I like it. I've played with aex and I like it but I'm partial to the LG camera and assistant.

Sent from my LG-H872 using Tapatalk

 

[WindowsDOS]

Bricked my phone

I seem to have misunderstood this part

Once laf is flashed, and you have pulled the USB cable, you can click exit, and then re-open LG UP.
Choose partition DL again, and this time pick the H872 KDZ for the version your phone was on prior to flashing 10p (11g, 11h, or 20a)
Select all partitions except laf. If you forget to uncheck laf, you will have to do this all over again.
When it completes, it will reboot your phone.

I saw the phone go through the laf, it went through the process for flashing two other partitions within about 2 seconds before I could pull the USB. It only got to the "laf bak" partition.
How do we flash the H872 KDZ without shutting off the phone and going back into download mode? Trying to go back into download mode after flashing the laf partition seems to have bricked my phone.

Obviously I took a risk and suffered the consequences. Would I be able to send this to LG and pay to have them re-flash whatever I messed up? Or is there anything I could try before that? The phone was briefly recognized by windows as a qualcomm 8000 something. Now nothing.

Any suggestions/help is appreciated.

 

[cgregoryou]

I seem to have misunderstood this part



I saw the phone go through the laf, it went through the process for flashing two other partitions within about 2 seconds before I could pull the USB. It only got to the "laf bak" partition.
How do we flash the H872 KDZ without shutting off the phone and going back into download mode? Trying to go back into download mode after flashing the laf partition seems to have bricked my phone.

Obviously I took a risk and suffered the consequences. Would I be able to send this to LG and pay to have them re-flash whatever I messed up? Or is there anything I could try before that? The phone was briefly recognized by windows as a qualcomm 8000 something. Now nothing.

Any suggestions/help is appreciated.

If you prefer before it flashed system you should be fine. Did you exit and reopen LG up and do the h872 KDZ right after?

 

[WindowsDOS]

If you prefer before it flashed system you should be fine. Did you exit and reopen LG up and do the h872 KDZ right after?

I couldn't flash it. The phone wasn't being recognized by LG UP. I can't boot it or get to download mode.

My mistake was I thought I had to turn off the phone and do the process for download mode before I could flash the h872 kdz. I guess I was only supposed to close LG UP and then redo the process.

 

[cgregoryou]

I couldn't flash it. The phone wasn't being recognized by LG UP. I can't boot it or get to download mode.

My mistake was I thought I had to turn off the phone and do the process for download mode before I could flash the h872 kdz. I guess I was only supposed to close LG UP and then redo the process.

Yes, you were just supposed to reopen LG UP, not restart your phone. Can you get into download mode by plugging your phone in and holding vol+? You might try different USB ports and different cables. I'm not sure if that will help.

What is happening when you boot up your phone?

 

[WindowsDOS]

Yes, you were just supposed to reopen LG UP, not restart your phone. Can you get into download mode by plugging your phone in and holding vol+? You might try different USB ports and different cables. I'm not sure if that will help.

What is happening when you boot up your phone?

Nothing. I can't get it to respond to any button presses or combo's.

 

[Ken C]

Nothing. I can't get it to respond to any button presses or combo's.

A thought if all else fails, may or may not work, but the phone is going to die eventually right? (I actually had to do this at one point) after it dies do the cord +button deal, but plug the cord into the pc first and see what you get.
Like I said just a thought.

Have lgup started before you do this, it'll give you a "no handset" msg at first, when it grabs the phone lgup will automatically do its thing and go to the flashing screen. Maybe you'll get lucky. I want to say I did something like this once myself and if nothing else it shouldn't hurt anything I would think.




Sent from my LG-H872 using Tapatalk

 

[cgregoryou]

Nothing. I can't get it to respond to any button presses or combo's.

Is it stuck on? Does it power cycle? Can you hold vol- and it restart? I'm trying to figure out what state it is in. Pictures help.

 

[WindowsDOS]

Is it stuck on? Does it power cycle? Can you hold vol- and it restart? I'm trying to figure out what state it is in. Pictures help.

A picture of the phone won't help much. There's no buzzing, sound, backlight, or anything to indicate it's working. One thing I noticed is my wireless charger does detect the phone and start charging it. I was able to get the following info from dmesg in linux when I tried just plugging it in, vs trying to do download mode.

https://imgur.com/a/o0hPEcX
https://imgur.com/a/V3jxGpz
https://imgur.com/a/ymXDnTN

 

[cgregoryou]

A picture of the phone won't help much. There's no buzzing, sound, backlight, or anything to indicate it's working. One thing I noticed is my wireless charger does detect the phone and start charging it. I was able to get the following info from dmesg in linux when I tried just plugging it in, vs trying to do download mode.

https://imgur.com/a/o0hPEcX
https://imgur.com/a/V3jxGpz
https://imgur.com/a/ymXDnTN

None if those links did anything. Have you let it die like Ken C mentioned then holding vol+ and plugging it in? Another option, not sure how hardware savvy you are, is buying a busted up H872 on eBay and swapping the innards.

 

[WindowsDOS]

None if those links did anything. Have you let it die like Ken C mentioned then holding vol+ and plugging it in? Another option, not sure how hardware savvy you are, is buying a busted up H872 on eBay and swapping the innards.

That's what I've decided to do for now. I found a working one with just a broken screen and scuffed outer case for $63 surprisingly. I'll let you know when I get around to rooting that one the right way . Thanks for the suggestion. I didn't expect them to be so reasonably priced.

 

[cgregoryou]

That's what I've decided to do for now. I found a working one with just a broken screen and scuffed outer case for $63 surprisingly. I'll let you know when I get around to rooting that one the right way . Thanks for the suggestion. I didn't expect them to be so reasonably priced.

Just be careful taking them apart and putting it back together. There are a lot of small connectors in there. Should be pretty straightforward though from the videos I've watched. I bought a perfect conditioned G6 other than a broken SD card reader for $89. I looked into replacing the SIM card/SD card reader but decided to use a USB-C flash drive to transfer data for now.

 

[Ken C]

I thought I bricked mine a few times rooting and getting everything right.

Sent from my LG-H872 using Tapatalk

 

[RashaMatt]

Works on 20f ?

I just successfully rooted my H872-TN (T-Mobile for USA) using this method, starting on 20f.

I followed the instructions for 20a, but substituted "20f" wherever applicable (like having a 20f kdz to flash after flashing the H918 LAF).

The process went exactly as it did on 20a.

Thanks guys! :laugh: :good:

 

[RashaMatt]

Alternative stock kernels / init.d support?

Is there any way to get init.d support on the stock ROM (20f rooted)?

Also, anyone else run into Magisk issues, where it reports "unable to extract zip" when installing some modules (like the Greenify add-on)?

 

[STALKER18]

20f KDZ

Hi man !
I"m very happy to see that it is working with 20f.
can u share the link to download this 20f ?

 

[RashaMatt]

How to change T-Mobile boot logo and sound?

Anyone know how to change the pink T-Mobile logo and sound on bootup?

Really I just want to get rid of the annoying jingle that plays.

 

[STALKER18]

[delete me]