Samsung just released Android 10 for the Galaxy S9 series and the Note 9 earlier this year. The latest update featured Samsung’s One UI 2.0 firmware update. As we already know, One UI is Samsung’s official name for their firmware since the Android 9 Pie update and the legacy continues further with the flagship Galaxy S20 series. Galaxy S20, however, features an upgraded version with build One UI 2.1. One UI 2.1 firmware update has also rolled out to the S10 series and Note 10 series across the globe just this week. While it’s unclear whether the new update will come to the S9 and Note 9 series, here is an unofficial One UI 2.1 ROM port from the Galaxy S20 series for the Galaxy S9 and Note 9 devices.
When the Galaxy S20 series launched, just a couple of months ago, it featured all the latest hardware and software configuration one could ask for. The most intriguing thing about the Galaxy S20, apart form the 108 MP camera, is the One UI 2.1 firmware. Some of the features of the One UI 2.1 update include Share Live, pro Video Mode, Single Take, Night mode on front camera. new Live Focus with new backgrounds, New My Filter option in camera, Night mode on Hyperlapse, new Photo Editor, Dolby on Games, and much more.
Thanks to developer AlexisXDA on XDA, here we have the first One UI 2.1 ROM port (from the S20 series) for the Galaxy S9, S9+, and the Note 9 . With this ROM, you get all the Galaxy S20 features mentioned above. In addition, you also get some unique features like odexed, debloated software, some tweaks for best performance and better battery, and all the Galaxy S20 apps and features mentioned above.
So you can also call it the Galaxy S20 ROM port for the Note 9 and Galaxy S9 and S9+. However, note that this requires a rooted Android device with the latest TWRP recovery intact. It has been tested working on Galaxy S9 (SM-G960F/FD), S9+ (SM-G965F/FD), and the Note 9 (SM-N960F/FD) models. This includes almost all the global Exynos variants. As the Snapdragon variants do not have a rooting method and a custom TWRP recovery, the One UI 2.1 ROM port does no work. The installer is an AROMA Installer; meaning you can choose which apps and features you want to install to your device’s system.
Warnings and Notes: Before you hop onto flashing the Galaxy S20 ROM port, note the following:
- This is a custom ROM. So your device’s warranty may be void.
- Your Galaxy S9 or S9+ or Note 9 device needs to be rooted with latest TWRP recovery setup.
- Rooting and installing a custom ROM will trip Knox counter.
- Device warranty may be void.
- Backup is a must as it will wipe clean your device.
Download and Install Galaxy S20 ROM port based on One UI 2.1 firmware for Galaxy S9 and Note 9
Step 1: Make sure your S9, S9+, and Note 9 device is rooted with latest TWRP recovery.
Step 2: Download the latest Samsung Note 9 ROM port zip and all the necessary bug and fixes from below.
- For Galaxy S9 | Download S9 Alexis ROM 1.3
- For Galaxy S9 Plus | Download S9+ Alexis ROM 1.3
- For Galaxy Note 9 | Download Note 9 Alexis ROM
Step 3: Transfer the Note 9 ROM and other zips to phone storage or SD card.
Step 4: Reboot device into TWRP recovery. To do so, turn off the device completely and then press and hold Volume down (or up) + Bixby + Power Key at the same time.
Step 5: From TWRP, go to Backup option and take a full Nandroid backup. Later, go to wipe option and wipe system, data, cache, etc. or do a factory reset. DO NOT wipe internal storage!
Step 6: Tap on install option and first flash the Alexis ROM. The device will go into AROMA installer. Follow the onscreen instructions and choose the features you like.
Step 7: Now Reboot into system. Wait while the first boot completes.
Step 8: Once the first boot completes, again reboot into TWRP recovery.
Step 9: Flash the remaining bug fixes zip listed above.