Is G998U1UEU7EWF4/G998U1OYM7EWF4/G998U1UEU7EWF4 stable for daily use?

This is an official firmware release. All official releases from FirmwareMirror are stable and tested. Always backup your data before flashing any firmware.

Is this firmware the latest version?

Yes, G998U1UEU7EWF4/G998U1OYM7EWF4/G998U1UEU7EWF4 is the version shown. Check FirmwareMirror regularly for newer versions of Samsung Galaxy S21 Ultra (USA unlocked) firmware.

Download Samsung Galaxy S21 Ultra (USA unlocked) ROM - G998U1UEU7EWF4/G998U1OYM7EWF4/G998U1UEU7EWF4 (ACG)

Q: How to Flash Odin on Samsung Galaxy S21 Ultra (USA unlocked)

1. Download the G998U1UEU7EWF4/G998U1OYM7EWF4/G998U1UEU7EWF4 Recovery ROM (.zip file). 2. Transfer the file to the internal storage root directory of your Samsung Galaxy S21 Ultra (USA unlocked). 3. Navigate to Settings > About Phone > System Update. 4. Tap the OS logo 10 times to enable advanced features.

What's New

Software and Terms & Conditions Update

IMPORTANT INFORMATION: This update includes revised Terms & Conditions for your device, including the Dispute Resolution Agreement with arbitration terms. For more information, review https://www.samsung.com/us/support/legal/mobile/.
By clicking “Install now,” by scheduling your install, or by continuing to use your device after installation, you agree to these revised Terms & Conditions.

• Security
The device is protected with improved security.

Android Version

N/A

File Size

1.29 GB

Release Date

Jun 01, 2023

Flash Method

Odin

Download ROM

Available

Download Now

File Size: 1.29 GB

Mirror Downloads (1)

Mirror 1

1 mirror(s) available • Click any button to download

Verification & Details

Package Name:

G998U1UEU7EWF4

How to Flash Odin on Samsung Galaxy S21 Ultra (USA unlocked)

Please follow these steps carefully to install the G998U1UEU7EWF4/G998U1OYM7EWF4/G998U1UEU7EWF4 update safely. Ensure your device has at least 60% battery.

Download the G998U1UEU7EWF4/G998U1OYM7EWF4/G998U1UEU7EWF4 Recovery ROM (.zip file).
Transfer the file to the internal storage root directory of your Samsung Galaxy S21 Ultra (USA unlocked).
Navigate to Settings > About Phone > System Update.
Tap the OS logo 10 times to enable advanced features.
Tap the top-right menu icon and select 'Choose update package'.
Select the downloaded zip file and wait for the automated installation to complete.

Back to Samsung Galaxy S21 Ultra (USA unlocked)

Download Samsung Galaxy S21 Ultra (USA unlocked) Firmware (G998U1UEU7EWF4/G998U1OYM7EWF4/G998U1UEU7EWF4)