SM-A566U1 firmware for ATT – USA (AT&T)
18 builds for the Galaxy A56 5G 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 |
|---|---|---|---|---|---|
A566U1UEUBDZJ1/A566U1OYMBDZJ1/A566U1UEUBDZJ1 | Oct 19, 2026 | Android 17 | Feature | 11 | on server |
A566U1UESBCZI2/A566U1OYMBCZI2/A566U1UESBCZI2 | Sep 15, 2026 | Android 16 | Security | 11 | on server |
A566U1UESACZHB/A566U1OYMACZHB/A566U1UESACZHB | Sep 1, 2026 | Android 16 | Security | 10 | on server |
A566U1UES9CZG7/A566U1OYM9CZG7/A566U1UES9CZG7 | Jul 26, 2026 | Android 16 | Security | 9 | on server |
A566U1UES8CZF6/A566U1OYM8CZF6/A566U1UES8CZF6 | Jun 30, 2026 | Android 16 | Security | 8 | on server |
A566U1UES7CZE5/A566U1OYM7CZE5/A566U1UES7CZE5 | May 28, 2026 | Android 16 | Security | 7 | on server |
A566U1UEU7CZE2/A566U1OYM7CZE2/A566U1UEU7CZE2 | May 20, 2026 | Android 16 | Feature | 7 | on server |
A566U1UES7BZD1/A566U1OYM7BZD1/A566U1UES7BZD1 | Apr 28, 2026 | Android 16 | Security | 7 | on server |
A566U1UES6BZC4/A566U1OYM6BZC4/A566U1UES6BZC4 | Mar 30, 2026 | Android 16 | Security | 6 | on server |
A566U1UES6BZB7/A566U1OYM6BZB7/A566U1UES6BZB7 | Mar 2, 2026 | Android 16 | Security | 6 | on server |
A566U1UES5BZA7/A566U1OYM5BZA7/A566U1UES5BZA7 | Feb 2, 2026 | Android 16 | Security | 5 | on server |
A566U1UES4BYL2/A566U1OYM4BYL2/A566U1UES4BYL2 | Dec 17, 2025 | Android 16 | Security | 4 | on server |
A566U1UES4BYK2/A566U1OYM4BYK2/A566U1UES4BYK2 | Nov 19, 2025 | Android 16 | Security | 4 | on server |
A566U1UES3BYJ2/A566U1OYM3BYJ2/A566U1UES3BYJ2 | Oct 31, 2025 | Android 16 | Security | 3 | on server |
A566U1UEU3BYIB/A566U1OYM3BYIB/A566U1UEU3BYIB | Sep 29, 2025 | Android 16 | Feature | 3 | on server |
A566U1UES3AYH1/A566U1OYM3AYH1/A566U1UES3AYH1 | Aug 19, 2025 | Android 15 | Security | 3 | on server |
A566U1UES2AYG1/A566U1OYM2AYG1/A566U1UES2AYG1 | Jul 23, 2025 | Android 15 | Security | 2 | on server |
A566U1UEU1AYFA/A566U1OYM1AYFA/A566U1UEU1AYFA | Jun 29, 2025 | Android 15 | Feature | 1 | on server |
Download the latest ATT build
samloader download -m SM-A566U1 -r ATT -v A566U1UEUBDZJ1/A566U1OYMBDZJ1/A566U1UEUBDZJ1Changelog and security patch level
Samsung's official release notes for SM-A566U1 in ATT, including the security patch level of each update: doc.samsungmobile.com/SM-A566U1/ATT.
See how to download Samsung firmware and how to flash it. Back to the SM-A566U1 overview.