SM-S921U firmware for ATT – USA (AT&T)
43 builds for the Galaxy S24 in region ATT. The full version string is
PDA/CSC/MODEM – you need it to download a specific build.
| Version (PDA/CSC/MODEM) | Released | Android | Type | Bit | File |
|---|---|---|---|---|---|
S921USQS6EZJ1/S921UOYN6EZJ1/S921USQS6EZJ1 | Oct 27, 2026 | Android 17 | Security | 6 | on server |
S921USQU6EZIF/S921UOYN6EZIF/S921USQU6EZIF | Oct 12, 2026 | Android 17 | Feature | 6 | on server |
S921USQS6DZI1/S921UOYN6DZI1/S921USQS6DZI1 | Sep 30, 2026 | Android 16 | Security | 6 | on server |
S921USQS6DZH3/S921UOYN6DZH3/S921USQS6DZH3 | Sep 1, 2026 | Android 16 | Security | 6 | on server |
S921USQS6DZG1/S921UOYN6DZG1/S921USQS6DZG1 | Jul 23, 2026 | Android 16 | Security | 6 | on server |
S921USQS6DZF2/S921UOYN6DZF2/S921USQS6DZF2 | Jun 24, 2026 | Android 16 | Security | 6 | on server |
S921USQS6DZE2/S921UOYN6DZE2/S921USQS6DZE2 | Jun 2, 2026 | Android 16 | Security | 6 | on server |
S921USQU5DZDR/S921UOYN5DZDR/S921USQU5DZDR | May 26, 2026 | Android 16 | Feature | 5 | on server |
S921USQS5CZD2/S921UOYN5CZD2/S921USQS5CZD2 | Apr 15, 2026 | Android 16 | Security | 5 | on server |
S921USQS5CZC1/S921UOYN5CZC1/S921USQS5CZC1 | Mar 26, 2026 | Android 16 | Security | 5 | on server |
S921USQS5CZB2/S921UOYN5CZB2/S921USQS5CZB2 | Mar 5, 2026 | Android 16 | Security | 5 | on server |
S921USQS4CZA1/S921UOYN4CZA1/S921USQS4CZA1 | Jan 21, 2026 | Android 16 | Security | 4 | on server |
S921USQS4CYL1/S921UOYN4CYL1/S921USQS4CYL1 | Dec 18, 2025 | Android 16 | Security | 4 | on server |
S921USQS4CYK2/S921UOYN4CYK2/S921USQS4CYK2 | Nov 20, 2025 | Android 16 | Security | 4 | on server |
S921USQS4CYJ1/S921UOYN4CYJ1/S921USQS4CYJ1 | Oct 29, 2025 | Android 16 | Security | 4 | on server |
S921USQU4CYI9/S921UOYN4CYI9/S921USQU4CYI9 | Sep 25, 2025 | Android 16 | Feature | 4 | on server |
S921USQS4BYG2/S921UOYN4BYG2/S921USQS4BYG2 | Aug 13, 2025 | Android 15 | Security | 4 | on server |
S921USQS4BYF5/S921UOYN4BYF5/S921USQS4BYF5 | Jul 17, 2025 | Android 15 | Security | 4 | on server |
S921USQS4BYF2/S921UOYN4BYF2/S921USQS4BYF2 | Jun 23, 2025 | Android 15 | Security | 4 | on server |
S921USQS4BYE4/S921UOYN4BYE4/S921USQS4BYE4 | May 20, 2025 | Android 15 | Security | 4 | on server |
S921USQU4BYD9/S921UOYN4BYD9/S921USQU4BYD9 | Apr 29, 2025 | Android 15 | Feature | 4 | on server |
S921USQS4AYA2/S921UOYN4AYA2/S921USQS4AYA2 | Apr 8, 2025 | Android 14 | Security | 4 | on server |
S921USQS4AYB3/S921UOYN4AYB3/S921USQS4AYB3 | Mar 13, 2025 | Android 14 | Security | 4 | on server |
S921USQS4AXL5/S921UOYN4AXL5/S921USQS4AXL5 | Mar 10, 2025 | Android 14 | Security | 4 | on server |
S921USQS4AYA1/S921UOYN4AYA1/S921USQS4AYA1 | Feb 13, 2025 | Android 14 | Security | 4 | on server |
S921USQS4AXL3/S921UOYN4AXL3/S921USQS4AXL3 | Feb 13, 2025 | Android 14 | Security | 4 | on server |
S921USQU4AXL1/S921UOYN4AXL1/S921USQU4AXL1 | Feb 13, 2025 | Android 14 | Feature | 4 | on server |
S921USQS4AXL4/S921UOYN4AXL4/S921USQS4AXL4 | Jan 22, 2025 | Android 14 | Security | 4 | on server |
S921USQS4AXL2/S921UOYN4AXL2/S921USQS4AXL2 | Jan 7, 2025 | Android 14 | Security | 4 | on server |
S921USQS4AXKD/S921UOYN4AXKD/S921USQS4AXKD | Dec 11, 2024 | Android 14 | Security | 4 | on server |
S921USQU4AXK4/S921UOYN4AXK4/S921USQU4AXK4 | Nov 26, 2024 | Android 14 | Feature | 4 | on server |
S921USQS4AXJA/S921UOYN4AXJA/S921USQS4AXJA | Nov 4, 2024 | Android 14 | Security | 4 | on server |
S921USQS3AXI1/S921UOYN3AXI1/S921USQS3AXI1 | Oct 9, 2024 | Android 14 | Security | 3 | on server |
S921USQS3AXHF/S921UOYN3AXHF/S921USQS3AXHF | Sep 25, 2024 | Android 14 | Security | 3 | on server |
S921USQU3AXH7/S921UOYN3AXH7/S921USQU3AXH7 | Sep 9, 2024 | Android 14 | Feature | 3 | on server |
S921USQS3AXFJ/S921UOYN3AXFJ/S921USQS3AXFJ | Aug 7, 2024 | Android 14 | Security | 3 | on server |
S921USQS3AXFC/S921UOYN3AXFC/S921USQS3AXFC | Jul 15, 2024 | Android 14 | Security | 3 | on server |
S921USQS2AXE4/S921UOYN2AXE4/S921USQS2AXE4 | Jun 10, 2024 | Android 14 | Security | 2 | on server |
S921USQS2AXD3/S921UOYN2AXD3/S921USQS2AXD3 | May 7, 2024 | Android 14 | Security | 2 | on server |
S921USQU1AXCB/S921UOYN1AXCB/S921USQU1AXCB | Mar 27, 2024 | Android 14 | Feature | 1 | on server |
S921USQS1AXBG/S921UOYN1AXBG/S921USQS1AXBG | Mar 1, 2024 | Android 14 | Security | 1 | on server |
S921USQU1AXB7/S921UOYN1AXB7/S921USQU1AXB7 | Feb 23, 2024 | Android 14 | Feature | 1 | on server |
S921USQU1AWM9/S921UOYN1AWM9/S921USQU1AWM9 | Jan 18, 2024 | Android 14 | Feature | 1 | on server |
Download the latest ATT build
samloader download -m SM-S921U -r ATT -v S921USQS6EZJ1/S921UOYN6EZJ1/S921USQS6EZJ1See how to download Samsung firmware and how to flash it. Back to the SM-S921U overview.