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    Samsung Galaxy S21 (SM-G991N) - KOO - G991NKSU3BULF firmware

    PDA G991NKSU3BULF
    Product Code KOO
    Security Patch 2022-01-01
    Country
    Model SM-G991N
    Product Code KOO
    Security Patch 2022-01-01
    OS Version Android 12
    PDA G991NKSU3BULF
    CSC G991NOKR3BULF
    Build Date 2021-12-24
    Changelist 23365054

    Country
    Model SM-G991N
    OS Version Android 12
    CSC G991NOKR3BULF
    Build Date 2021-12-24
    Changelist 23365054
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