[ROM] [S9/S9+] [UNOFFICIAL] [LineageOS 18.1] [Exynos] [Weekly]

[Neurotical]

ROM DOWNLOADS:

• [ROM] [S9/S9+/Note 9] [UNOFFICIAL] [LineageOS 18.1] [Weekly]
• Last Updated May 26, 2022
  • OS Version: Android 11 (LOS 18.1 changelog)
  • Kernel: Linux 4.9.316 (May 26, 2022)
  • Security Patch: AOSP (May 5, 2022)
  • Wireguard: 20211208 (December 8, 2021)

ROM INSTALL INSTRUCTIONS:

• From OEM:
  • Lineage Recovery
  • Format /system + /data + /cache
  • Flash
  • Reboot
  • Root is not included. To root, install Magisk yourself.
• From existing Unofficial weekly:
  • Use OTA, or
  • Sideload via ADB in recovery

BASEBAND UPDATING:

1. Install Samsung USB drivers
2. Install Odin 3.14 (or later)
3. Download updated baseband firmware from the XDA thread for your model phone.
4. Unzip and re-pack "modem.bin" into a .tar file such as "modem.tar"
5. Reboot phone into download mode
6. Open Odin
7. Load your modem.tar file into CP in Odin
8. Start flash
9. Reboot

MICROG INSTALL INSTRUCTIONS:

• In the F-Droid store add in the appropriate repo: https://microg.org/fdroid/repo per the official instructions.
• Do the following, in this order:
  1. Install microG services core (F-Droid)
  2. Install microG services framework proxy (F-Droid)
  3. Install NLP backend, such as Mozilla location (F-Droid) or GSM Location (F-Droid)​
  4. Install Google Play Store (APK mirror) or FakeStore (F-Droid)​
  5. microG settings -> self check -> enable all features​
  6. microG settings -> location modules -> enable Mozilla Location Service​
  7. For background location permission go to your system settings and allow microG services core and your Mozilla NLP to access location all the time.
  8. For full notification support got to microG settings -> enable Google device registration, cloud messaging, and Google safety net.

WORKING FEATURES:

• GPS
• NFC
• Wi-Fi
• Audio
• HDMI
• Camera
• Ethernet
• Bluetooth
• MTP/ADB
• Encryption
• Glove Mode
• Android Auto
• OTA Updates
• Call Recording
• Mobile Network
• SELinux Enforcing
• Fingerprint Sensor
• Signature Spoofing
• Wireguard (via kernel)

NOT WORKING FEATURES:

• Iris Scanner
• VoLTE

CONTRIBUTORS:

• Neurotical
  • Builds and uploads the weekly releases (incl. OTA).
  • Commits changes to repos.
  • Patches & updates kernel.
  • Adds functionality per community requests.
  • Fixes LOS compile bugs, maintains repos.
• Gnarf49
  • How-to compile LOS guidance & instructions in the original thread.
• Murtzsch
  • Guidance updating kernel in the original thread.
  • Guidance including the Wireguard feature.
• King1990
  • Fixing LOS compile bugs to keep this build alive!
• dwarisz
  • Fixing LOS compile bugs to keep this build alive!
• gusnz
  • Guidance on enhancing universal9810-common repo!
• Synt4x.93
  • The original developer making these builds possible. Thank you so much!!!

SOURCE CODE:

• https://github.com/Geoknyda/
• https://www.lineageoslog.com/18.1
• https://github.com/LineageOS/android_build
• https://github.com/Geoknyda/android_kernel_samsung_universal9810
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/log/?h=linux-4.9.y

REFERENCES:

• https://en.wikipedia.org/wiki/Linux_kernel_version_history#Releases_4.x.y

REQUIREMENTS:

• Stock Samsung Oneui 2 - 2.5 (Android 10) Firmware. (Bootloader + Vendor)

XDA DevDB Information

• LineageOS 18.1, ROM for the Samsung Galaxy S9

Version Information

• Status: Stable
• ROM Firmware Required: Oneui 2 - 2.5

My work will always be free for everyone to use and I will never hide anything behind a paywall.


* We are not responsible for anything that may happen to your phone by installing custom ROMs/kernels.
* You do it at your own risk. You take responsibility upon yourself and are not to blame us or XDA.
* Your warranty will likely be voided by installing custom ROMs.

 

[geronimoge]

Great, thanks a lot!
Is a clean install needed coming from official builds (synt4x.93)?

 

[Neurotical]

Great, thanks a lot!
Is a clean install needed coming from official builds (synt4x.93)?

If you installed and are currently running one of Synt4x's ROM builds, you can flash over it. If you're coming from stock ROM you'll have to do a full format per Lineage's official guide.

 

[snowmotion]

Wow looks like a polished and hassle-free Lineage version! Thanks for your work and for sharing it.
I am considering to buy either a Galaxy S9 or S10 for an acquaintance since both are often sold phones. So they should have good community support for quite a while. Neither of the two has official Lineage support as of now. They do appear to be supported by /e/OS and CrDroid but I feel that Lineage is still the way to go for rock-solid experience right after flashing.
So is it planned to add official Lineage support? If not, would it be feasible with some help and contributions of others? Could you add this information in the first post for others too please?
Would be valuable information for many

 

[Tiago Saraiva]

Thanks for updating the rom. Are you going to keep the rom up to date all the time or just this once?

 

[Neurotical]

Thanks for updating the rom. Are you going to keep the rom up to date all the time or just this once?

I'll run the updates weekly.

 

[Isovitisgr]

Great! We missed LOS 18.1 for S9+!

 

[geronimoge]

Just did a dirty flash and rebooted successfully. So far everything is fine.
So thanks again!
BTW: I had to flash magisk again.

 

[aureljared]

Haven't flashed ROMs since I had my Nexus 6P, so apologies if I missed something - is there a specific method to enable encryption on this ROM, or is it simply broken as of now?

I set my phone up, logged into everything and reinstalled all my apps, and then enabled encryption. Now the phone crashes and performs soft reboots. It also logged me out of my Google account. I suppose I'm going to have to wipe and reinstall.

It's also worth noting that neither TWRP 3.3.1 nor 3.5.2 can decrypt /data (I double-checked - the PIN was correct), which is a shame. I would have liked to have /data encrypted.

 

[aureljared]

Haven't flashed ROMs since I had my Nexus 6P, so apologies if I missed something - is there a specific method to enable encryption on this ROM, or is it simply broken as of now?

I set my phone up, logged into everything and reinstalled all my apps, and then enabled encryption. Now the phone crashes and performs soft reboots. It also logged me out of my Google account. I suppose I'm going to have to wipe and reinstall.

It's also worth noting that neither TWRP 3.3.1 nor 3.5.2 can decrypt /data (I double-checked - the PIN was correct), which is a shame. I would have liked to have /data encrypted.

I figured it out! The trick was to enable encryption before setting anything else up.

Skip everything you can in initial setup (no Wi-Fi, no Google account, etc) so that by the end all you have is a PIN code in place (skip adding a fingerprint too). Then enable encryption, allow it to do its job, and when it reboots you can go about continuing setup.

TWRP unfortunately still cannot decrypt /data, however.

Hope this helps anyone running into the same problem.

 

[samsepi0l99]

Hi dude, I have a samsung s9, I don't know yet between install DotOS (wich there's not european version I think), CrDroid (which is offically maintained) or LineageOS, I saw that as you said Synt4x.93 did one, but what's the difference between his rom and yours ? Thanks in advance and thanks for your work ^^

 

[Neurotical]

Hi dude, I have a samsung s9, I don't know yet between install DotOS (wich there's not european version I think), CrDroid (which is offically maintained) or LineageOS, I saw that as you said Synt4x.93 did one, but what's the difference between his rom and yours ? Thanks in advance and thanks for your work ^^

LineageOS 18.1 is regularly updated by the maintainers, so I just run the updates for S9 and S9+ owners. This includes monthly AOSP performance and security updates.

Additionally, I am in the process of upstreaming the kernel. This provides performance and security enhancements made possible by the long term Linux kernel maintainers.

Synt4x hosts the device specific repos that make building Linegae 18.1 for the S9 and S9+ possible.

 

[samsepi0l99]

LineageOS 18.1 is regularly updated by the maintainers, so I just run the updates for S9 and S9+ owners. This includes monthly AOSP performance and security updates.

Additionally, I am in the process of upstreaming the kernel. This provides performance and security enhancements made possible by the long term Linux kernel maintainers.

Synt4x hosts the device specific repos that make building Linegae 18.1 for the S9 and S9+ possible.

Ok thx, so if I want to install a rom, it's yours then. Because updates

 

[Galaxy9plus-support]

Have the Kernel upgrades improved anything noticeable on star2lte, eg battery life or something?
Great job too. well done !

 

[Neurotical]

Have the Kernel upgrades improved anything noticeable on star2lte, eg battery life or something?
Great job too. well done !

Yeah, there's a lot of improvements in performance, battery life, and security. I notice better reponsiveness and battery life, definitely. There's a full list of updates here: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/log/?h=linux-4.9.y Just browse for the kernel you're on and look at the previous update details. You can also browse my working kernel repo here: https://github.com/Geoknyda/android_kernel_samsung_universal9810 and reconcile with the Linux link to make sure the updates you care about are committed. I save a branch off of my default 4.9y after every patch bundle in case I have to revert due to an incompatibility.

At the rate I am going, I expect to have the kernel fully patched and up to date in a couple of days. I'll keep posting the ROMs as I progress in the OP. It's a lot of work going through 3,400 commits in a few days, but I think those who want security and performance for their S9/S9+ deserve to have it until the kernel reaches EOL in 2023.

 

[Neurotical]

Update:
The kernel is now fully patched and up to date. I will be maintaining additional kernel updates as they are released by the Linux Long-Term Support kernel team for the 4.9y branch until 2023, which is EOL for that branch. These updates will be merged into the weekly builds as well. Enjoy!

 

[waynea]

Hi there
jst a quick question......do the monthly android security updates come OTA, or do I have to download a file and install with TWRP?
I only ask because someone here seemed to sugegst that you had to do a complete reinstall of the latest version?

 

[Neurotical]

Hi there
jst a quick question......do the monthly android security updates come OTA, or do I have to download a file and install with TWRP?
I only ask because someone here seemed to sugegst that you had to do a complete reinstall of the latest version?

You can flash it over your existing ROM via ADB or OTA..

 

[waynea]

thaks for super quick reply.
No the original install will be over stock. But what to i need to do when there is an update?

 

[Neurotical]

Updating from stock, you'll have to do full wipe/flash/reset.

Updating afterwards with weekly builds in this thread's OP only requires dirty flashing:

• Use OTA

or:

1. upload recovery
2. sideload updated zip
3. format cache & reboot