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Samsung Galaxy S21 Ultra 5G (SM-G998N) Android 15 Firmware (G998NKSSCHZA9) – KOO | SamFrew

Home / Firmware / SM-G998N / KOO

Firmware G998NKSSCHZA9

Device Galaxy S21 Ultra 5G

Model SM-G998N

Region KOO

OS Android 15

Release Date 3/5/2026

Upload Date 3/12/2026

PDA G998NKSSCHZA9

CSC G998NOKRCHZA9

Changelist 30959686

Size 8359124400 bytes (approx. 7.8 GB)