SM-S921N firmware for KOO – South Korea
52 builds for the Galaxy S24 in region KOO. 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 |
|---|---|---|---|---|---|
S921NKSSIEZJ1/S921NOKRIEZJ1/S921NKSSIEZJ1 | Oct 22, 2026 | Android 17 | Security | 18 | on server |
S921NKSUHEZIF/S921NOKRHEZIF/S921NKSUHEZIA | Oct 6, 2026 | Android 17 | Feature | 17 | on server |
S921NKSUHZZI4/S921NOKRHZZI4/S921NKSUHEZI4 beta | Sep 15, 2026 | – | Feature | 17 | pulled |
S921NKSUHZZHL/S921NOKRHZZHL/S921NKSUHEZHK beta | Sep 3, 2026 | – | Feature | 17 | pulled |
S921NKSSHDZH3/S921NOKRHDZH3/S921NKSSHDZH3 | Aug 26, 2026 | Android 16 | Security | 17 | on server |
S921NKSSGDZG1/S921NOKRGDZG1/S921NKSSGDZG1 | Jul 15, 2026 | Android 16 | Security | 16 | on server |
S921NKSSFDZF3/S921NOKRFDZF3/S921NKSSFDZE1 | Jun 18, 2026 | Android 16 | Security | 15 | on server |
S921NKSSFDZE1/S921NOKRFDZE1/S921NKSSFDZE1 | May 28, 2026 | Android 16 | Security | 15 | on server |
S921NKSUEDZDR/S921NOKREDZDR/S921NKSUEDZDR | May 11, 2026 | Android 16 | Feature | 14 | on server |
S921NKSUEZZDD/S921NOKREZZDD/S921NKSUEDZDB beta | Apr 20, 2026 | – | Feature | 14 | pulled |
S921NKSUEZZD5/S921NOKREZZD5/S921NKSUEDZD1 beta | Apr 9, 2026 | – | Feature | 14 | pulled |
S921NKSSECZCH/S921NOKRECZCH/S921NKSSECZCH | Apr 8, 2026 | Android 16 | Security | 14 | on server |
S921NKSUDZZCD/S921NOKRDZZCD/S921NKSUDDZB5 beta | Mar 26, 2026 | – | Feature | 13 | pulled |
S921NKSSDCZC1/S921NOKRDCZC1/S921NKSSDCZB1 | Mar 23, 2026 | Android 16 | Security | 13 | on server |
S921NKSSDCZB4/S921NOKRDCZB4/S921NKSSDCZB1 | Feb 26, 2026 | Android 16 | Security | 13 | on server |
S921NKSSCCZA1/S921NOKRCCZA1/S921NKSSCCZA1 | Jan 15, 2026 | Android 16 | Security | 12 | on server |
S921NKSSBCYL1/S921NOKRBCYL1/S921NKSSBCYL1 | Dec 11, 2025 | Android 16 | Security | 11 | on server |
S921NKSSBCYK2/S921NOKRBCYK2/S921NKSSBCYK1 | Nov 17, 2025 | Android 16 | Security | 11 | on server |
S921NKSSACYJ3/S921NOKRACYJ3/S921NKSSACYJ1 | Oct 24, 2025 | Android 16 | Security | 10 | on server |
S921NKSS9CYI9/S921NOKR9CYI9/S921NKSU9CYI3 | Oct 1, 2025 | Android 16 | Security | 9 | on server |
S921NKSU9CYI5/S921NOKR9CYI5/S921NKSU9CYI3 | Sep 22, 2025 | Android 16 | Feature | 9 | on server |
S921NKSU9ZYI3/S921NOKR9ZYI3/S921NKSU9CYI3 beta | Sep 11, 2025 | – | Feature | 9 | pulled |
S921NKSU9ZYHB/S921NOKR9ZYHB/S921NKSU9CYH9 beta | Aug 29, 2025 | – | Feature | 9 | pulled |
S921NKSU9ZYH3/S921NOKR9ZYH3/S921NKSU9CYH1 beta | Aug 13, 2025 | – | Feature | 9 | pulled |
S921NKSS9BYG8/S921NOKR9BYG8/S921NKSS9BYG8 | Aug 11, 2025 | Android 15 | Security | 9 | on server |
S921NKSS8BYF1/S921NOKR8BYF1/S921NKSS8BYF1 | Jul 10, 2025 | Android 15 | Security | 8 | on server |
S921NKSS7BYE9/S921NOKR7BYE9/S921NKSS7BYE9 | Jun 12, 2025 | Android 15 | Security | 7 | on server |
S921NKSS6BYDF/S921NOKR6BYDF/S921NKSS6BYDF | May 12, 2025 | Android 15 | Security | 6 | on server |
S921NKSU5BYD9/S921NOKR5BYD9/S921NKSU5BYD9 | Apr 17, 2025 | Android 15 | Feature | 5 | on server |
S921NKSU5BYCG/S921NOKR5BYCG/S921NKSU5BYCG | Apr 7, 2025 | Android 15 | Feature | 5 | on server |
S921NKSU5ZYCE/S921NOKR5ZYCE/S921NKSU5BYCE beta | Mar 26, 2025 | Android 15 | Feature | 5 | pulled |
S921NKSU5ZYC6/S921NOKR5ZYC6/S921NKSU5BYC6 beta | Mar 17, 2025 | Android 15 | Feature | 5 | pulled |
S921NKSS5AYB1/S921NOKR5AYB1/S921NKSS5AYB1 | Mar 6, 2025 | Android 14 | Security | 5 | on server |
S921NKSU5ZYBA/S921NOKR5ZYBA/S921NKSU5BYBA beta | Feb 19, 2025 | Android 15 | Feature | 5 | pulled |
S921NKSS5AYA1/S921NOKR5AYA1/S921NKSS5AYA1 | Feb 10, 2025 | Android 14 | Security | 5 | on server |
S921NKSS5AXL1/S921NOKR5AXL1/S921NKSS5AXL1 | Jan 7, 2025 | Android 14 | Security | 5 | on server |
S921NKSU5ZXLJ/S921NOKR5ZXLJ/S921NKSU5BXLJ beta | Jan 6, 2025 | Android 15 | Feature | 5 | pulled |
S921NKSU5ZXL5/S921NOKR5ZXL5/S921NKSU5BXL5 beta | Dec 16, 2024 | Android 15 | Feature | 5 | pulled |
S921NKSS5AXKA/S921NOKR5AXKA/S921NKSS5AXKA | Dec 9, 2024 | Android 14 | Security | 5 | on server |
S921NKSU5ZXKZ/S921NOKR5ZXKZ/S921NKSU5BXKZ beta | Dec 5, 2024 | Android 15 | Feature | 5 | pulled |
S921NKSU5AXK4/S921NOKR5AXK4/S921NKSU5AXK4 | Nov 19, 2024 | Android 14 | Feature | 5 | on server |
S921NKSS4AXJ1/S921NOKR4AXJ1/S921NKSS4AXJ1 | Oct 15, 2024 | Android 14 | Security | 4 | on server |
S921NKSU3AXH7/S921NOKR3AXH7/S921NKSU3AXH7 | Sep 5, 2024 | Android 14 | Feature | 3 | on server |
S921NKSS3AXGJ/S921NOKR3AXGJ/S921NKSS3AXFD | Aug 12, 2024 | Android 14 | Security | 3 | on server |
S921NKSU3AXFG/S921NOKR3AXFG/S921NKSS3AXFD | Jul 11, 2024 | Android 14 | Feature | 3 | on server |
S921NKSU2AXE4/S921NOKR2AXE4/S921NKSU2AXE4 | Jun 10, 2024 | Android 14 | Feature | 2 | on server |
S921NKSS2AXE1/S921NOKR2AXE1/S921NKSS2AXE1 | May 16, 2024 | Android 14 | Security | 2 | on server |
S921NKSU1AXCA/S921NOKR1AXCA/S921NKSU1AXCC | Apr 9, 2024 | Android 14 | Feature | 1 | on server |
S921NKSU1AXCA/S921NOKR1AXCA/S921NKSU1AXC5 | Mar 26, 2024 | Android 14 | Feature | 1 | on server |
S921NKSU1AXBA/S921NOKR1AXBA/S921NKSU1AWM7 | Feb 28, 2024 | Android 14 | Feature | 1 | on server |
S921NKSU1AXB5/S921NOKR1AXB5/S921NKSU1AWM7 | Feb 16, 2024 | Android 14 | Feature | 1 | on server |
S921NKSU1AWM9/S921NOKR1AWM9/S921NKSU1AWM7 | Jan 25, 2024 | Android 14 | Feature | 1 | on server |
Download the latest KOO build
samloader download -m SM-S921N -r KOO -v S921NKSSIEZJ1/S921NOKRIEZJ1/S921NKSSIEZJ1See how to download Samsung firmware and how to flash it. Back to the SM-S921N overview.