CustomDroid
Samsung

Samsung Galaxy S23 Ultra

Qualcomm Snapdragon 8 Gen 2 (SM8550)released 2023up to android 16latest android is 17
ro.product.devicedm3q

also sold as Galaxy S23 Ultra · SM-S9180 · SM-S918B · SM-S918N · SM-S918Q · SM-S918U · SM-S918U1 · SM-S918W

Actively maintained

Released 2023, newest ROM build 1 month ago (2 ROMs still current). A phone that still gets updates keeps going long after its manufacturer stops.

Hardware

SoC
Qualcomm Snapdragon 8 Gen 2 (SM8550)
CPU
1× 3.36 GHz Cortex-X3, 2× 2.8 GHz Cortex-A715, 2× 2.8 GHz Cortex-A710, 3× 2.0 GHz Cortex-A510
GPU
Adreno 740
Architecture
arm64
RAM
8 GB / 12 GB (LPDDR5X)
Storage
256 GB / 512 GB / 1 TB (UFS 4.0)
Screen
3088x1440 · Dynamic AMOLED
Released
2023

Specs from Nura wiki (formerly postmarketOS) (CC BY-SA 4.0).

ROMs · 04

The Samsung Galaxy S23 Ultra (codename dm3q) has 4 tracked custom ROMs on CustomDroid — including crDroid, Evolution X, VoltageOS and 1 more, running up to Android 16. Each listing links to the project's own download and install guide, and was last checked against the projects' catalogues on 6 Nov 2026.

Samsung plans security updates for this model until Feb 2028. endoflife.date · what end-of-life means

Tick “compare” on two or three builds to see them side by side.

Show
Android

RSS feed — subscribe to get new Samsung Galaxy S23 Ultra builds in your reader · JSON

Before you flash

Flashing generally means unlocking the bootloader, booting a custom recovery, wiping, then installing the ROM. Exact steps differ per device and ROM, so follow the Install guide for the one you pick, and back up first. Check what can break (banking apps, DRM, carrier features) and how to get back to stock before you start. Why flash a custom ROM · All guides

This is a Qualcomm device, so on Windows you'll want the Google USB Driver (and QDLoader 9008 to unbrick) before your computer will see it in fastboot. Which USB drivers you need.

Timeline

  1. Jul 2026
    crDroid, Evolution X, Project Elixir, VoltageOS first tracked

Dates show when CustomDroid first indexed each ROM for this device, not when support originally launched.

ROM availability and links come from each project. CustomDroid indexes builds, it doesn't mirror them — always download from the official project, verify the file's hash/signature, confirm it matches your exact codename, and back up before flashing.