[ROM][Android 11][UNOFFICIAL]LineageOS 18.1[LG G8][alphalm]

[cheger32]

WARNING: Carriers in the US are shutting down 3G networks. This ROM does not have VoLTE capability at this time, so calls will not be sent or received if your carrier has disabled 3G.

If you are in the US and wish to use this ROM, please check your carrier's 3G support and if there are any dates set for a 3G shutdown. If you are outside the US, this is unlikely to affect you, but do a google search anyway.

At the time of writing this disclaimer (March 18, 2022) AT&T has already disabled 3G and T-Mobile will shut down 3G networks for prior sprint users by the end of the month.

LineageOS 18.1 (Android 11) for US LG G8 (G820*)


LineageOS (also known as “Lineage”) is a free and open-source operating system based on Android. It is the successor to the custom ROM CyanogenMod.

#include "std_disclaimer.h"
/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.
*/

This is an unofficial build of Lineageos 18.1 (Android 11) for the US LG G8.


THIS IS NOT A GSI

This works on all carriers!

This will only work for the US LG G8.
This will only work for alphalm, not alphaplus.
This will not work on the 'G8s' or the 'G8x'.
This will not work on Korean models.
YOU HAVE BEEN WARNED.

Partition Backup:
Please backup all important partitions and data before installing this ROM. THis is very important for certain carriers including AT&T, as they do not provide the KDZ firmware files, so once you install lineage, you may not easily be able to go back if you haven't made a backup, though it's a good idea for anyone attempting to install any ROM on any device.

Important partitions are:
boot
product
vendor
dtbo
vbmeta
system

Make a backup of these in QFIL (both _a and _b slots of each, You will need to use QFIL during the following bootloader unlock guide so you can make this backup during that process.

Bootloader Must Be Unlocked
There's a guide for this linked below. This step is a must.
This must be installed from TWRP or other custom recovery on stock.
Please make sure latest stock firmware is installed. This may not be completely
necessary, but having an old firmware image installed has caused me
issues with call audio and such while developing this ROM.

What Works

• Bluetooth
• Wifi
• Call/SMS (WARNING: Carriers in the US and perhaps other countries are disabling 3G, so no more calls and possibly even texts if this happens with your carrier!)
• Data 2G/3G/LTE
• Camera (GCam is required for wide angle back camera)
• Audio
• NFC
• GPay Contactless Payments (Requires Magisk Hide)
• Hotspot
• Google Assistant Voice Match
• Nearly Everything!

What Doesn't Work

• VoLTE/VoWiFi/IMS - LG has a complicated proprietary IMS, so no VoLTE at all!
• Assistant Voice Match while screen is off
• AOD (I'm working on this)
• Please let me know in the comments

Requirements

1. US LG G8 on any carrier
2. Latest firmware installed on device (may work with older firmware but results will vary)
3. Latest unofficial LineageOS zip (on github, linked in thread) and TWRP zip (attached to thread)
4. SD Card or adb for sideloading (see step 5)
5. PC with Windows (Linux is possible if you know what you're doing. Check out bkerler/edl on github, it works the same way as QFIL, but requires a small amount of Linux knowledge/experience.)

How to install

1. Unlock Bootloader and root with Magisk (Follow guide linked below)
2. Make a backup of all your data (I strongly recommend making a backup of your partitions with qfil (or EDL for linux users))
3. Download TWRP and the Lineage zip
4. Installl TWRP (Follow quick guide in attached archive)
5. Place Lineage zip and anything you want to install through recovery on external SD card (Can also be sideloaded with 'adb sideload', If so, skip this step)
6. Boot into TWRP or other custom recovery with volume and power shortcut
7. Install Lineage zip from sdcard or sideload (I always recommend sd, there's less to go wrong)
8. Once it completes, reboot into recovery again. There's an option for this in TWRP to skip the button combo. TWRP IS GONE. YOU WILL BOOT INTO LINEAGE RECOVERY. USE THIS FOR REMAINING STEPS.
9. Format Data (This is completely necessary. You will be returned to recovery on boot if you do not follow this step.)
10. Install Gapps, Magisk, and anything else from sd or with adb sideload. (If you don't want/need root, you can skip installing Magisk
11. Format Data Again (System will send you back to recovery to do it if you don't)
12. Reboot to system and enjoy!

A big thanks to SGCMarkus for everything he has done for LG devices on this platform. This wouldn't be possible without his work. Go buy him a coffee or something!

Big thanks to those I haven't named from the V50 G8 G8s Telegram group as well

Other Credits

J0SH1X
enforc


Links


Guide For Unlocking Bootloader

Guide LG G8/G8x/v50 Bootloader Unlock and Magisk Root using Firehose​

posted by Seasee606

GCam For Wide Angle Back Camera

GCam Hub MGC_8.1.101_A9_PV0i

Go to this link and download MGC_8.1.101_A9_PV0i_libs_MGC.apk
Others will work, but some not as well. I've noticed some issues with this version crashing. If you experience this, try other versions from the link above.

GApps

Only install GApps packages for Android 11!

NikGApps
Highly recommended. (Because I use it and I know it works, it doesn't necessarily mean it's best though.) Follow download buttons. Go to Releases > NikGapps-R. Packages will be here. Info about what each package contains is on the page linked above.

MindTheGApps
I've tried this once and It seemed alright, but it was a little minimal for my taste. It's linked by LineageOS so it's here.

OpenGapps
I haven't tried this at all, but it's also linked by LineageOS so it should be here.


Download

Release: LineageOS 18.1
Release Date: 2021-10-13
MD5: 8e63d765ea7fe90c6fe9ebf4975c2a35
Filename: lineage-18.1-20211013-UNOFFICIAL-alphalm-signed.zip
Size: 908 MB (951854628 B)
Device: LM-G820 USA
Android Version: 11


Download from Github

Release Page


Sources / Device Tree

https://github.com/xmusjackson/android_device_lge_alpha-common
https://github.com/xmusjackson/android_device_lge_alphalm
https://github.com/xmusjackson/android_device_lge_sm8150-common
https://github.com/SGCMarkus/android_device_lge_common/tree/76432f76c5994bd1033d01150433f081a8c6dee3
https://github.com/xmusjackson/android_kernel_lge_sm8150
https://github.com/SGCMarkus/android_hardware_lge/tree/64bef53ae00f0496e35bc59a61a07ad40537d706
https://github.com/xmusjackson/proprietary_vendor_lge_alpha


Screenshots

Spoiler: Screenshots

Screenshots from LM-G820QM7 (Open US)

Attached is a copy of the archive containing TWRP for the G8. I downloaded this from telegram and take no credits, there just isn't a thread about this here that I've seen. The instructions to install are included in the archive.
Please let me know of any bugs in the comments!
Thanks!

 

[cheger32]

Downgrading and Crossflashing

This ROM requires your device to be on stock Android 10. Downgrading may be necessary, with some devices requiring a crossflash for the process!

Crossflashing

Crossflashing is only for those who own a G8 from a carrier that doesn't provide a KDZ (firmware image). There is no practical purpose to crossflash unless you really don't want the carrier bloatware, but there are easier ways to remove this.

There is a guide for crossflashing Here.
I haven't tried to crossflash personally but I've seen much success. The G8/G8X/v50 Telegram group (specifically the notes there) can definitely be a lot of help to anyone with an AT&T or Sprint G8 that wishes to go this route.

Downgrading

First, you have to download the appropriate firmware. You can select your preferred firmware here:
https://lg-firmwares.com/lg-lmg820qm-firmwares/
but this one is for the openus model and should work for sprint and at&t models:
https://lg-firmwares.com/downloads-file/25195/G820QM20f_00_NAO_US_OP_0402

Second, you have to use LGUP with some slight modifications to flash the firmware to your device.
NOTE: This works without an unlocked bootloader and will relock the bootloader on your device. If you've unlocked your bootloader previously, you'll have to repeat the process.

Here is a brief guide for downgrading taken from this post:
(DO NOT FOLLOW THIS GUIDE IF YOU NEED TO CROSSFLASH)

Quote from TheLoonyRebel:

...
And here's the software you will need to get the job done:
https://www.androidfilehost.com/?fid=8889791610682884898

1. Install the LG drivers if you haven't already.
http://tool.lime.gdms.lge.com/dn/downloader.dev?fileKey=UW00120120425

2. Install LG Up
3. Install the LG Common DLL
4. Copy the UI confilg files to C:\Program Files (x86)\LG Electronics\LGUP\model\Common
5. Turn off the G8.
6. Once off hold up volume up then insert your USB into the phone.
7. Open LG Up. If you get an error message ignore.
8. Select REFURBISH in LG Up
9. Load the KDZ file by drag and drop where it says BIN file
10. Click start
11. Once the downgrade is done installing the phone will reboot...
...

Do not follow the bootloader unlock method in that thread as it will fail miserably and soft brick your phone, only follow the downgrade method quoted above.

If there are any questions, please ask in the comments.

Edit: I've attached the necessary files in case that androidfilehost link becomes dead in the future.

 

[lufan]

Thank you for your efforts!

 

[minhthien0711]

Can i install rom for G820N Korea ?
Can you help me fix vibration for G820N ?
I using Los gsi rom but my phone hadn't vibration

 

[cheger32]

Can i install rom for G820N Korea ?
Can you help me fix vibration for G820N ?
I using Los gsi rom but my phone hadn't vibration

I don't think this rom would work on your device, but I could be wrong. Either way, I do not recommend trying it. Also, I've never used a GSI but I've heard they're buggy in general.

 

[lufan]

After two days of use, I found that the functions of always on display are abnormal, and the side Google buttons cannot be customized

 

[cheger32]

After two days of use, I found that the functions of always on display are abnormal, and the side Google buttons cannot be customized

There's a feature in Lineage called Ambient Display, alongside AOD. It's hard to find in settings, but if you go to your quick settings tiles and tap the edit button, there will be a tile for Ambient Display to add. Disabling this made the display behave more normally for me.
If this does not fix your problem, please elaborate

As for the side Google buttons, I'm not sure what you're referring to, please be more specific.

 

[Natedanver_99]

Thank you for your efforts!
I was about to get rid of my Sprint G8 for not receiving any software updates for half a year haha
Edit: Just installed and its working flawlessly on Sprint G8

 

[btbochs]

Thank you!
I tested MindTheGapps, contacts and calendar couldn't sync, because google play service had no rights.
Just set the rights, it's perfect.

 

[lufan]

There's a feature in Lineage called Ambient Display, alongside AOD. It's hard to find in settings, but if you go to your quick settings tiles and tap the edit button, there will be a tile for Ambient Display to add. Disabling this made the display behave more normally for me.
If this does not fix your problem, please elaborate

As for the side Google buttons, I'm not sure what you're referring to, please be more specific.

Thank you for your reply. I tried to turn off ambient display and turn on AOD. After locking the screen, AOD information will be displayed for a second or two, then flash once and disappear

 

[cheger32]

Thank you for your reply. I tried to turn off ambient display and turn on AOD. After locking the screen, AOD information will be displayed for a second or two, then flash once and disappear

It seems this is a bug. I will look into it and add it to the list. Thanks.

 

[Eudisleo1329]

First of all Thank you for your great work you saved the life of my Lg G8, so I will tell my experience after 3 days of use, deactivate everything that would have to do with the AOD because it is not working correctly even though in my case It is not essential, the ROM is really smooth and everything else works correctly, I am using it with Open GApps and it has not given me problems, the truth is the ROM is on the right track, but I only had a problem and it is time to playing the device hangs it stays bibrando until it forces the closing of the app, it does not always do it but when it happens annoying, I also feel that it does not go so fluid in the games compared to the stock, but it is nothing serious perhaps with a better kernel you can get more out of the ROM but for the moment it is a great advance for the LG G8 and again Thanks for your work!.

 

[starboi4eva]

Thank you for taking the time for making this ROM OP! Will install later today and report back.

 

[btbochs]

I disabled time sync, reboot. System time back to compile time.

 

[starboi4eva]

Thank you for taking the time for making this ROM OP! Will install later today and report back.

Been using this rom for two days and it is amazing. Fast and barely any issues apart from what is mentioned above. My only personal gripe is the slight drop in gaming performance than stock.

 

[orkhan96]

hi. can i do this with lg lmg820um Android 9 pie version. I will be glad if you answer

 

[Skye_h]

Alrighty, So I've been using the ROM for 2 days and I have a minor grievance with the OS itself which I'm sure is out of your control, Wallpaper zoom is incredibly annoying and the most common work around is an app called KLWP which is compatible with stock rom but not this one. My current solution is an app called SB Wallpaper Changer, under portrait setting it to single and Fixed, fixes the problem. But this breaks any system function that bases colors on the wallpapers color.

That all being said TYVM OP, stock rom on my device was falling apart at the seams, and while it may have taken me 15 hours to get LOS working it's ages better than stock.

Also edit: MY Phone was a Model LM-G820TM but reported as a 850UM in LG Bridge, don't even wanna know why. Android Reports LM-G820 after unlock and LOS

 

[cheger32]

hi. can i do this with lg lmg820um Android 9 pie version. I will be glad if you answer

I don't think this would work. Your device's firmware should be updated to android 10. The ROM does not install this, it is retained from original stock ROM. This would probably result in a brick.

 

[Skye_h]

Ok so I'm about a week in, the fingerprint scanner is just, gone. It's not that it isn't reading, it's just not an option. The fingerprint scanner is completely gone from the system settings, any attempt to communicate with it fail immediately. it just, disapeared from the software. Restarting or factory reseting didn't do anything, it's still gone.

Edit: Gonna try and go through recover to update then reflash if needed, pain

Edit 2: reflashed, still gone

 

[Eudisleo1329]

Ok so I'm about a week in, the fingerprint scanner is just, gone. It's not that it isn't reading, it's just not an option. The fingerprint scanner is completely gone from the system settings, any attempt to communicate with it fail immediately. it just, disapeared from the software. Restarting or factory reseting didn't do anything, it's still gone.

Edit: Gonna try and go through recover to update then reflash if needed, pain

Edit 2: reflashed, still gone

How strange I have been for 2 weeks and I still have not had that problem in relation to fingerprints, will the sensor of your device have been damaged?