If you own the international or global variant powered by the Exynos 9810 chipset, you do not have to be stuck in the past. Thanks to an active independent developer community, you can breathe new life into your device. Installing a custom ROM allows you to enjoy modern versions of Android, updated security patches, and completely new user interfaces.
SafetyNet may fail. You will need to use Magisk and Play Integrity fixes to use banking apps or Google Wallet.
The development for the Exynos 9810 has not slowed down. Here is the trajectory based on current XDA activity as of 2026:
Using a phone with a 2020 security patch is dangerous. Custom ROMs merge the latest Android Security Bulletins monthly. You are safer on a custom ROM from 2025 than on stock firmware from 2020. samsung s9 plus exynos custom rom
If installing an AOSP ROM that requires GApps, flash the immediately after the ROM without rebooting. Once complete, tap Reboot System .
: The standard for a clean, "Stock Android" experience; unofficial builds are available for Android 16 (LineageOS 23) .
: Flashing a new ROM will wipe all internal storage . Common Issues & Considerations If you own the international or global variant
Ensure your phone has at least 70% battery to prevent it from dying mid-flash.
You keep Samsung-specific features (camera processing, specialized UI), but get a much newer OS version. The "Clean Stock" Experience: LineageOS & Pixel Experience:
Open Odin on your PC and connect your phone via USB. The ID:COM box should turn blue. SafetyNet may fail
On your S9 Plus, navigate to .
Built on the LineageOS backbone, crDroid adds a massive layer of customization. The current branch, crDroid 11 (Android 15), allows you to tweak every visual element of the phone, from status bar icons to quick settings toggles. It is designed for users who feel that even LineageOS isn't customizable enough. That said, due to the extensive modifications, users have occasionally reported Error 7 or mounting issues during installation if the device partitions aren't properly prepared.
Transfer your chosen Custom ROM .zip file (and a compatible package if your chosen ROM does not include Google services natively) to the device.
At the base of the tower, he met Ira — a small woman with salt-streaked braid and a gaze that cataloged him immediately. She didn’t ask how he knew to come. She had been expecting someone who could hear an unusual signal: a low, persistent carrier embedded within public LTE broadcasts. They had been trying to localize it for months but needed someone who understood Exynos baseband quirks. Ravi’s saved kernels and his ability to parse unusual logs made him the kind of person they’d placed the note for.