[BETA][ROM][Unofficial] ArrowOS 12.1 | Latest release: November 27th 2022 [DISCONTINUED]

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askermk2000

askermk2000

Senior Member
Jul 9, 2015
1,229
2,668
Moto G
LG G5
forum.xda-developers.com

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

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...
forum.xda-developers.com forum.xda-developers.com

The above post has a recent and succinct explanation (in particular that the modem firmware expects LGs implementation). Though I can't verify the accuracy.
I know there's a post somewhere by SGCMarcus that also explains this more in-depth (in V30/V35/V40 etc, forum). Maybe try a search like this (google): "site:forum.xda-developers.com lg volte reverse"
 
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AShiningRay

AShiningRay

Senior Member
Sep 1, 2021
146
67
Xiaomi Redmi Note 4
LG V20
MinoForge said:
Hey folks, really happy to see this development! Hope it goes great places. Looks slick as anything

I have a somewhat related question and I hope its okay to ask here. I know that VoLTE hasn't worked for any custom roms, and I'm interested in the problem. To be clear, I'm not asking for a miracle from you guys. This is a purely exploratory question for my own benefit. I am considering attempting to reverse-engineer some of the (from my understanding) proprietary blobs that make VoLTE work on the stock/stock-adjacent roms.

Have there been any deep-dives into IMS/VoLTE stuff posted?
Maybe notes about how things interact when everything is working happily on a stock(ish) rom?

Again, I'm just curious, and kinda looking for a masochistic hobby RE project. I'm somewhat new to radios/modems/IMS etc, but have some experience with other areas of android and RE. Any pointers would be appreciated.
Click to expand...
Click to collapse
A bit late to respond to that but: I'm afraid the only resources you'll get about VoLTE specific for the V20 will be the stock sources from LG. No one managed to dive into it to get VoLTE working on custom roms as far as i know, so all the knowledge available comes from other sources and devices.
 
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Satomi99

Member
Jun 11, 2022
23
9
sorry.just read it.
 

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xxseva44

xxseva44

Senior Member
May 16, 2019
463
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Canada
LG V20
Google Pixel 4a 5G
Update on ArrowOS:
ArrowOS for the V20 will be discontinued. Why? Because it's no longer maintained.

I will be moving towards los19.1. If you want ArrowOS for your devices, you are free to build it for yourself as i have provided all the resources needed.

I will now be aiding in maintaining los 19.1 & 20.
 
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  • 1
    xxseva44
    xxseva44
    Lenny_One said:
    Aww man, guess I'll wait for npJohnson to make 12/13 for the v20, thanks for bringing us 11 and 12 to the v20!!
    Click to expand...
    Click to collapse
    The los19.1/A12 builds will be released soon Keep an eye on the official los 19.1 thread as it's already up.
    Also, no problem:)

    I might still make builds here and there in the future.
    View
  • 11
    xxseva44
    xxseva44
    logo.png

    ArrowOS
    ​

    Code: 
    /*
* We are 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 us for messing up your device, We will laugh at you.
*It is your fault because you chose to do all the modifications on your device.
* Remember projects like these and the work done on them is a hobby to the
* contributors and the team members, no one is working for you nor is getting paid for it
* have some respect for the work done by them since it is done purely on interest or a hobby

*/

    DISCONTINUED
    Why?

    __________________________________________________________________________________________________________________
    ABOUT
    ArrowOS     is an Android Open Source Project based Android mobile operating system started with the aim of keeping things simple, clean and neat.

    Website: https://arrowos.net
    Github: https://github.com/ArrowOS

    Credits:
    @xxseva44
    @AShiningRay
    @ROMSG
    @askermk2000
    @Stealth1226

    Rom details
    Release Kernel: 4.4.205
    Android Version: 12.1
    Adreno Driver: 5xx
    Selinux: Permissive
    Maintainer: Me, xxseva44

    What works and what doesn't?
    Refer to my wiki page:

    V20 Device Functionality

    LGE_8996_COMMON. Contribute to...
    github.com github.com


    Want root?
    Use magisk v25.2, availible here. Change the file extention from apk to zip and flash in recovery.


    Want gapps?
    Use nikgapps, availible here.

    AND A MESSAGE FROM ONE OF THE TWO KERNEL DEVS:​

    [BETA][ROM][Unofficial] ArrowOS 12.1

    ArrowOS /* * We are not responsible for...
    forum.xda-developers.com forum.xda-developers.com

    ####################NOTE#########################​

    You MUST update to twrp V3.70 before flashing.

    You can downlaod it here: https://twrp.me/Devices/
    Thanks @npjohnson :)

    FAILING TO DO SO MAY RESULT IN CORRUPT FILE SYSTEM ONLY FIXABLE THROUGH LG UP OR 9008 RECOVERY MODE. YOU MAY ALSO END UP IN A RECOVERY BOOTLOOP ONLY RECOVERABLE BY FLASHING THE REOCVERY PARTITION. YOU HAVE BEEN WARNED​

    ##################################################​

    TREES:
    ##################################################################################
    ##################################################################################

    CAF display

    GitHub - xxseva44/hardware_qcom-caf_msm8996_display

    Contribute to...
    github.com github.com

    CAF media

    GitHub - PixelExperience/hardware_qcom-caf_msm8996_media

    Contribute to...
    github.com github.com

    Broadcom FM(Modified)

    GitHub - stendro/android_hardware_broadcom_fm

    Contribute to...
    github.com github.com

    Kernel

    GitHub - LGE-G5-G6-V20/msm8996_lge_kernel

    Contribute to LGE-G5-G6-V20/msm8996_lge_kernel...
    github.com github.com

    Dac interface

    GitHub - SGCMarkus/android_hardware_lge

    Contribute to SGCMarkus/android_hardware_lge...
    github.com github.com

    MSM8996 common

    GitHub - xxseva44/LGE_device_msm8996-common: LGE_8996_COMMON

    LGE_8996_COMMON. Contribute to...
    github.com github.com

    V20 variants

    GitHub - xxseva44/LGE_8996-Variants

    Contribute to xxseva44/LGE_8996-Variants...
    github.com github.com

    V20 common

    GitHub - xxseva44/LGE_device_v20-common

    Contribute to xxseva44/LGE_device_v20-common...
    github.com github.com

    LG common

    GitHub - xxseva44/LGE_Device_common

    Contribute to xxseva44/LGE_Device_common...
    github.com github.com

    Vendor

    GitHub - xxseva44/LGE_proprietary_vendor

    Contribute to xxseva44/LGE_proprietary_vendor...
    github.com github.com
    ##################################################################################
    ##################################################################################

    Screenshots:
    View
    7
    AShiningRay
    AShiningRay
    That's right! We're finally releasing the first 4.4 open beta, starting with Android 12.1 for G5, G6 and V20!

    I'm the one of the main kernel devs on this project, so i'll be adding info on this part of the development and beta testing.

    ________________________________________________________

    To anyone who wants to beta test this and the upcoming CRDroid rom by @ROMSG: We're using a dedicated github organization to handle feedback, bugs, trees and general development.

    That organization is located here, with @xxseva44 moving the trees above to that same org soon:

    LGE G5 G6 V20

    Devices, vendor trees and new 4.4 kernel for...
    github.com github.com

    If you have any issues that span across multiple roms using this newer kernel and updated device trees, or simply know that what you're facing is something that's bound to happen irrespective of a specific ROM, please open an issue in that org detailing the problem, your phone model, etc.

    ________________________________________________________

    For a list of features that already work in kernel 4.4, we have a wiki page with just that:

    Kernel V4.4 New _ Feature states in Android 11 ROMs

    Contribute to LGE-G5-G6-V20/msm8996_lge_kernel...
    github.com github.com


    ________________________________________________________

    Kernel issues should ideally be opened here:

    Issues · LGE-G5-G6-V20/msm8996_lge_kernel

    Contribute to LGE-G5-G6-V20/msm8996_lge_kernel...
    github.com github.com

    Please note that this kernel is shared by the LG G5, V20 and G6, so when opening an issue, we need to know at least which device you're using, but the model (VS995, H872, etc) can give us more insight.


    ________________________________________________________

    ROM issues will probably work best as xda posts for now, since those are already going to be separated by phone.


    ________________________________________________________

    Quick primer of what to expect:

    For the kernel: It's fast, really fast. Not only did we clean up tons of LGE code from the kernel trees, saving up a lot of memory and overhead, but also added lots of optimizations on top of a custom branch to make what's essentially a mix of @askermk2000's mk2000 and my own SwanKernel.

    For the roms: We've been working with people from G5 and G6 as well, and in turn managed to do a major overhaul of the rom-side blobs, drivers and hals, resulting on much improved performance and stability, even during internal tests.

    For issues: We didn't iron out all of the issues yet and are far from testing those things in a large scale, hence the open beta. We already have some known issues to fix, such as the much slower charge curve, usb OTG not being as fully fledged on the V20 as it was on 3.18, IR working slightly better than 3.18 but still not great, camera still freezing randomly... In any case, most of the other kernel features either work just like in 3.18, or better.


    ________________________________________________________

    Known issues outside of Android 12 and 4.4:

    Both TWRP and SHRP can have issues while flashing 12 due to incomplete support, so be careful and have a complete backup (including the recovery image itself) beforehand.
    View
    6
    xxseva44
    xxseva44
    Update time
    What's new?

    -All dac functions from stock work on 12
    -Ported dac filters from V30 (Big shoutout to SGCMarkus for his initial work)
    -Enabled Dac AVC volume comtrol (Again, Big shoutout to SGCMarkus for his initial work)
    -DRM is now functional
    -Immense performance improvements (refer to changelog for more info)

    Keep an eye out for new uploads:)
    View
    4
    xxseva44
    xxseva44
    Update time
    What's new?

    -Fingerprint is now functional
    -Dac is now functional
    -October security patch
    -Extra perf by killing logspam

    Keep an eye out for new uploads
    All builds have been uploaded:)
    View
    4
    xxseva44
    xxseva44

    DOWNLOADS/RELEASES​

    DOWNLOAD

    VS995:​

    27/11/2022: Uploaded
    ________________________________________________________________________________________________________________

    H990:​

    27/11/2022: Uploaded
    ________________________________________________________________________________________________________________

    H910:​

    27/11/2022: Uploaded
    ________________________________________________________________________________________________________________

    H918:​

    27/11/2022: Uploaded
    ________________________________________________________________________________________________________________

    LS997:​

    27/11/2022: Uploaded
    _________________________________________________________________________________________________________________

    INSTALLING STEPS​

    ********************************************Prerequisites**********************************************​

    1.If coming from stock, you MUST be on NOUGAT FIRMWARE​

    2.Own a v20 (duh)​

    3.Unlocked bootloader (if you are using a us996 or vs995, i can assist you, if not, look around on xda for a guide)​

    ********************************************************************************************************​

    STEPS:

    1.Reboot into recovery via the hardware button combo

    2. Wipe system, data, delvik, cache, system and data

    3.Flash the OS

    4.Flash anything else you want to run (magisk, etc) DO NOT FLASH ANY KERNEL UNLESS IT"S AN UPDATED 4,4 KERNEL

    5.Reboot

    6.Enjoy Android 12 on the V20:)
    View

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