Samsung S9 Plus Exynos Custom Rom Work Site

The Samsung Galaxy S9 Plus (Exynos) has reached its official end-of-life, but a thriving developer community continues to breathe new life into it through custom ROMs

. As of 2026, you can upgrade your device to modern Android versions—even Android 15 —far beyond Samsung’s official Android 10 limit. Top Custom ROM Picks for 2026

For the best experience, choose a ROM based on whether you want a modern Samsung feel or a clean, Google-like interface.

Leo’s Samsung Galaxy S9 Plus was a ghost in the machine. On paper, it was a 2018 flagship: a gorgeous curved AMOLED display, a versatile dual-aperture camera, and enough power for daily tasks. But in reality, it was a hot, stuttering mess.

The culprit was the Exynos 9810 processor.

While friends in the US praised their Snapdragon S9s for smooth performance and battery life, Leo’s European Exynos model would heat up scrolling through Twitter. Gaming was a lag fest. And the final insult? Samsung had pulled the plug on OS updates two years ago. He was stuck on Android 10 with a November 2020 security patch.

“It’s a paperweight with a beautiful screen,” he muttered, watching the battery drain 10% in fifteen minutes of camera use. He was about to list it on eBay for spare parts when a Reddit notification popped up: [ROM][OneUI 5.1] Noble ROM 3.0 for Exynos S9/S9+ - Faster than ever!

Leo’s heart skipped a beat. He remembered the old days: CyanogenMod on his Galaxy S2, XDA forums, and the thrill of turning a carrier-bloated brick into a lean, mean machine. But that was a decade ago. Could this tired Exynos S9 Plus really run Android 13 with One UI 5.1?

The XDA thread was a chaotic cathedral of hope and technical jargon. The OP (Original Poster), a dev named corsicanu, claimed they had backported the entire camera stack, fixed the Exynos thermal throttling, and even enabled VoLTE. The comments were glowing: “Benchmarks up 20%!” “No more overheating!” “It’s like a new phone!”

The risk was real. Flashing a custom ROM on an Exynos S9 Plus was a minefield:

Knox: Once tripped, Samsung Pay and Secure Folder were gone forever. The e-fuse would be physically blown. No going back.
The Binary Bootloader: Samsung had locked down updates. If he flashed wrong, the phone would be a hard brick. No download mode. No recovery. Just a black, expensive mirror.

But the stock ROM’s lag was a slow death anyway. Leo decided to go for glory.

The Procedure:

Friday night, 11 PM. He downloaded the prerequisites: TWRP (Team Win Recovery Project) for the starlte (S9) and star2lte (S9+), the Noble ROM zip, a patched version of Magisk for root, and the latest Exynos 9810 vendor image. He backed up his photos, kissed his e-warranty goodbye, and powered down.

Volume Down + Bixby + Power. The screen flashed. He was in Download Mode. He fired up Odin on his laptop, the ancient flasher tool with its four mysterious slots: BL, AP, CP, CSC. One wrong checkmark and it was over.

He clicked “Start.”

The blue bar crawled. His palms were sweaty. At 75%, the phone rebooted into a black screen. His heart stopped. For five seconds, nothing. Then, the glowing Samsung logo flickered. He exhaled.

He booted into TWRP, swiped to allow modifications, and formatted everything – Data, System, Cache, Dalvik. The stock ROM was dead. He then sideloaded the Noble ROM ZIP. The script ran, spitting out lines like “Patching Exynos thermal engine” and “Adjusting GPU governor.”

Finally, the message: “Script succeeded. Result was [0.200]”

He hit “Reboot System.”

The first boot on a custom ROM is always the longest. The “Samsung Galaxy S9+” logo glowed for a full three minutes. Then, the screen shimmered, and the new Android 13 setup wizard appeared. The colors were sharper. The animations were fluid. There was no stutter, no micro-lag. samsung s9 plus exynos custom rom

The Aftermath:

The next morning, Leo ran a stress test. He played Genshin Impact at medium settings – the Exynos used to overheat in 5 minutes. He played for 30. The phone got warm, not hot. The battery graph was a gentle downward slope, not a cliff.

The camera? The developer had ported the flagship camera drivers. The variable aperture f/1.5 and f/2.4 worked perfectly, even in Pro mode. For the first time, the Exynos S9 Plus felt like the phone Samsung should have shipped.

There were quirks. Secure Folder was gone. Samsung Pass showed an error about “tampered device.” But Leo didn’t care. He flashed a custom kernel, underclocked the big cores, and managed to squeeze 5 hours of screen-on-time – two more than he’d ever seen.

He returned to XDA, not as a lurker, but as a contributor. He posted his battery stats, helped a noob fix a bootloop by telling him to “fastboot erase misc,” and sent the developer $20 for coffee.

The Samsung S9 Plus Exynos was no longer a forgotten flagship. It was a thought-provoking machine, freed from Samsung’s planned obsolescence, running on the love of strangers on the internet.

In a world of thousand-dollar foldables and AI phones, Leo realized the most powerful feature wasn’t a spec sheet. It was an unlocked bootloader.

Here’s a grammatically proper version of your phrase, depending on how you intend to use it:

As a search term or title:

“Samsung S9 Plus Exynos Custom ROM”

As a full sentence:

“A custom ROM for the Samsung S9 Plus (Exynos version).”

If asking a question:

“What is the best custom ROM for the Samsung Galaxy S9 Plus with Exynos?”

Key corrections made:

Capitalized Samsung and Exynos (proper nouns).
Added Galaxy if referring to the full product name (optional but standard).
Used “the Samsung S9 Plus” in sentence form.
Added “version” or “model” after Exynos for clarity.

Samsung S9+ Exynos Custom ROM Review: A Breath of Fresh Air

As a long-time user of Samsung's flagship devices, I was excited to dive into the world of custom ROMs on my S9+ Exynos variant. After installing a custom ROM, I was blown away by the newfound flexibility, performance, and features that I never thought possible on my device. In this review, I'll share my experience with the custom ROM on my Samsung S9+ Exynos.

Installation Process

The installation process was relatively smooth, but I had to do some research to find a reliable source for the ROM and the necessary tools. I opted for the popular LineageOS ROM, which is known for its stability and feature-rich experience. I followed a well-documented guide on XDA Developers, and after a few reboots, I was up and running with my custom ROM. The Samsung Galaxy S9 Plus (Exynos) has reached

Performance

The first thing I noticed was the significant improvement in performance. The custom ROM brought a much-needed boost to my device, with animations feeling smoother and more responsive. The Exynos chip, which was previously criticized for its performance, now felt on par with its Snapdragon counterpart. I was able to play demanding games like PUBG and Fortnite at high graphics settings without any noticeable lag.

Battery Life

Battery life has been a pleasant surprise. With the custom ROM, I've seen a noticeable improvement in battery endurance. I attribute this to the removal of bloatware and the optimization of system services. On a single charge, I can easily get through a day and a half of moderate to heavy use.

Features

One of the best aspects of the custom ROM is the ability to customize almost every aspect of the device. I've added features like:

Always-on display: A feature I always wanted but never had on stock firmware.
Customizable quick settings: I can now rearrange and add toggles to my liking.
Gestures: I've enabled gestures like double-tap to wake and jump to camera with a simple swipe.
Root access: I've gained root access, which has allowed me to further customize my device.

Camera Performance

The camera performance on the custom ROM is on par with the stock firmware. I've noticed no significant differences in image quality, and features like Live Focus and Super Steady video stabilization work flawlessly.

Bugs and Stability

While I've experienced some minor bugs, such as occasional freezes and app crashes, they've been relatively rare. The community support for LineageOS is vast, and I've been able to quickly find solutions to any issues I've encountered.

Verdict

The custom ROM on my Samsung S9+ Exynos has breathed new life into my device. I've gained a level of customization and control that I never thought possible on a Samsung device. While there are some minor bugs, the overall experience has been extremely positive.

Recommendation

If you're a Samsung S9+ Exynos user looking to breathe new life into your device, I highly recommend exploring custom ROMs like LineageOS. Be prepared to invest some time in research and installation, but the payoff is well worth it.

Rating: 4.5/5

Pros:

Improved performance
Customization options
Better battery life
Root access

Cons:

Minor bugs and stability issues
Requires technical expertise for installation

ROM Details:

Device: Samsung S9+ Exynos (SM-G965F)
ROM: LineageOS 18.1
Android Version: 11

If you're interested in trying out a custom ROM on your Samsung S9+ Exynos, I encourage you to do some research and join the community on XDA Developers. Happy flashing! Leo’s Samsung Galaxy S9 Plus was a ghost in the machine

Samsung Galaxy S9 Plus (Exynos variant) , codenamed , remains a highly active device in the custom development scene in 2026. While official manufacturer support has ended, community-driven projects like offer modern Android versions, including ports of Android 14, 15, and 16 Top Custom ROM Recommendations (2025–2026)

The choice of ROM depends on whether you prefer the original Samsung experience ( ) or a clean, Google-like experience ( Samsung One UI Experience (Best for Feature Retention) Noble ROM (Recommended)

: Developed by AlexisXDA, this is widely considered the gold standard for Exynos S9+ users. Latest Versions : Recently updated to Noble ROM 5.2 , providing a stable One UI 7 (Android 15) experience ported from the Galaxy S24 Ultra. Highlights : Retains core Samsung features like Secure Folder Bixby remapping Samsung Dex Performance

: Includes "Hardly Debloated" tweaks and custom kernels for improved smoothness and battery life. : An alternative port of

that offers a full installation guide specifically for the S9+ Exynos 9810 chipset. Stock Android & Performance (AOSP/Pixel-like) Install Android 16 LineageOS 23 ON Galaxy S9 Plus

The "long story" of custom ROMs for the Samsung Galaxy S9 Plus (Exynos variant)

is a tale of a device that has outlived its official expiration date by years, thanks to a dedicated developer community. While Samsung officially ended support for the S9 series in April 2022

with Android 10, the Exynos 9810 chipset became a playground for enthusiasts seeking modern features like Android 14 The Two Paths of the S9+ Custom ROM Scene

There are generally two directions users take when modding this device: The "Refined Samsung" Experience: Noble ROM:

This is arguably the most popular project for the S9+. It ports features from newer Samsung flagships (like the S24) to the S9+. As of early 2025, developers have successfully ported Android 14

You keep Samsung-specific features (camera processing, specialized UI), but get a much newer OS version. The "Clean Stock" Experience: LineageOS & Pixel Experience:

These ROMs strip away Samsung's One UI entirely in favor of a "stock" Android look.

These are often faster and more "fluid" than One UI ports. However, they traditionally struggle with Samsung-proprietary tech like VoLTE and Wi-Fi Calling

, which often do not work on AOSP-based ROMs for Samsung devices. Critical Installation Milestones

Getting a custom ROM onto an S9+ (Exynos) follows a specific "long story" of technical hurdles: Unlock the Bootloader:

Unlike the US/Snapdragon models, the Exynos (International) model allows for easy bootloader unlocking, which is the "key" to the whole process. Custom Recovery (TWRP): Users must flash TWRP (Team Win Recovery Project) using a tool called Repartitioning:

Modern ROMs like One UI 7 are much larger than the original Android 8/9/10 system files. To fit them, developers created "repartitioning" scripts that borrow space from other internal storage areas.

Finally, the ROM and "GApps" (Google Apps) are sideloaded or installed directly from the phone's storage. Why the Exynos 9810 matters The "long story" is specific to the

variant. The Snapdragon version (sold in the US and Canada) typically has a locked bootloader that prevents these mods. Because of this, the Exynos S9+ has maintained a higher resale value for enthusiasts who want to run the latest software on "vintage" hardware. Common ROMs for the S9+ Exynos:

6. Recommended Kernel (For Performance)

ThunderStorm Kernel S9+ – Allows undervolting to fix Exynos heating.
RZ Kernel – Better battery idle drain.

2. Vanilla Speed vs. One UI Bloat

Stock One UI is feature-rich but heavy. A lightweight custom ROM (like LineageOS or crDroid) removes Samsung’s proprietary skin, TouchWiz remnants, and Bixby integration. The result? Dramatically faster app opening, smoother scrolling, and up to 30% better RAM management.

The Benefits: Why You Should Flash a Custom ROM Today

2. Pixel Experience / PixelOS

Base: AOSP + Google Pixel UI.
Why choose it: If you love the Google Pixel aesthetic (the launcher, the fonts, the icons) but don't want to buy a Pixel phone. It includes features like "Now Playing" and Pixel-specific camera tweaks.

4. Evolution X (Android 13) – The Pixel Port

Stability: 9/10
Features: Direct ports from Pixel phones. You get the Pixel Launcher, Google Photos unlimited backup (spoofed), and call screening (region-dependent).
Best for: Google fans.

8. Conclusion

Recommendation: If you want stability → LineageOS 21. If you want the Samsung look → Noble ROM 4.0.
Final Tip: Always keep a stock firmware backup on your PC in case you need to sell the phone.