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    Samsung Galaxy S21 (SM-G991B) - O2U - G991BXXS3BULC firmware

    Country
    Model SM-G991B
    Product Code O2U
    Security Patch 2021-12-01
    OS Version Android 12
    PDA G991BXXS3BULC
    CSC G991BOXM3BUKG
    Build Date 2021-12-21
    Changelist 22937332
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    Flash instructions

    Download Odin 5 files help 1 file help
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