Download Samsung GALAXY S23 ULTRA SM-S918U - TMB - S918USQS6CYB3
Download the firmware flash file GALAXY S23 ULTRA with the code SM-S918U. Samsung's latest firmware for the region with CSC code is 
TMB (TMB - United States). This firmware PDA version is S918USQS6CYB3, and the Android version is U (Android 14). This firmware file size is 10.02 GB. Please make sure the Galaxy model code is correct. You can check the model code on your Phone, Setting - About, Download mode, or you can find it by flipping your phone or among the things you found in the box.
This firmware is official from the Samsung Cloud Server. Of course, we recommend using official Samsung tools like Samsung Smart Switch or Samsung Kies. Samfirms.com will not be responsible for any damage caused by using the files on this website.
Device GALAXY S23 ULTRA Model SM-S918U AP Version S918USQS6CYB3 CSC Version S918UOYN6CYB3 OS U (Android 14) CSC Build Date 20250227110801 Binary (BIT/U) 6 Upload Date 2025-03-11 File Size 10.02 GB
How to flash Samsung SM-S918U/GALAXY S23 ULTRA firmware
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Enter Download Mode: Power off your device, then press Volume Down + Power + Home (or Volume Down + Power for newer devices). Confirm with Volume Up.
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Open Odin: Run Odin3 v3.13.1 as admin on your PC.
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Connect Device: Plug your device into the PC via USB. Odin should show a blue COM port.
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Load Firmware: Click AP/PDA and select your firmware file.
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Start Flashing: Ensure Auto Reboot and F. Reset Time are checked, then hit Start.
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Wait: A PASS! message means success. Your device will reboot automatically.
Tips and Precautions
Before attempting to flash your Samsung firmware, make sure you:
- Make sure Samsung USB Drivers are installed.
- Extract the firmware using WinRAR or 7-Zip.
- Have a backup of your device's data, as flashing firmware can erase all data.
- Follow the instructions carefully, as any mistakes can cause issues with your device.