Samsung SM-S921B firmware update — January 2025 security patch. Build: S921BXXU5AYA5. Includes the latest Android security patches and system stability improvements. Flash using Samsung Odin3.
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Verification & Details
Package Name:
S921BXXU5AYA5
How to Flash Odin on Samsung Galaxy S24
Please follow these steps carefully to install the S921BXXU5AYA5/S921BOXM5AYA5/S921BXXU5AYA7 update safely. Ensure your device has at least 60% battery.
Download the S921BXXU5AYA5/S921BOXM5AYA5/S921BXXU5AYA7 Recovery ROM (.zip file).
Transfer the file to the internal storage root directory of your Samsung Galaxy S24.
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.