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Home / Firmware / SM-G991N / KTC

Firmware G991NKSSCHZA5

Device Galaxy S21 5G

Model SM-G991N

Region KTC

OS Android 15

Release Date 1/12/2026

Upload Date 1/22/2026

PDA G991NKSSCHZA5

CSC G991NOKRCHZA5

Changelist 30959686

Size 8099331264 bytes (approx. 7.5 GB)

Samsung Galaxy S21 5G (SM-G991N) Android 15 Firmware (G991NKSSCHZA5) – KTC | SamFrew