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    Samsung Galaxy S21 (SM-G991U) - USC - G991USQSIHYL1 firmware

    Country
    Model SM-G991U
    Product Code USC
    Security Patch 2025-12-01
    OS Version Android 15
    PDA G991USQSIHYL1
    CSC G991UOYNIHYL1
    Build Date 2025-12-5
    Changelist 30959686
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    Flash instructions

    Download Odin 5 files help 1 file help
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