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Samsung Samsung Galaxy S21+ 5G (SM-G996U1)

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Samsung Galaxy S21+ 5G (SM-G996U1)

Welcome to the authoritative source for SM-G996U1 official firmware. This repository provides access to untouched system binaries directly from Samsung servers. Ensuring your device runs on verified software is paramount for security and stability.

  • 🚀 Direct High-Speed Access: We provide direct links to KIES/SmartSwitch production servers, eliminating third-party throttling and ensuring maximum download speeds.
  • 🛡️ Untouched Integrity: Every firmware package is provided in its original 5-file format (BL, AP, CP, CSC, and Home_CSC) with original MD5 signatures for verification.
  • 🚀 Daily Updates: Our database is synchronized daily with official Samsung updates for the US Unlocked S21+ variant.

Critical Technical Safety Protocol:
⚠️ Binary Bit (SW REV) Check: Before flashing, verify your device's current Binary Bit in Download Mode. Samsung prevents downgrading to a firmware version with a lower bit count than the one currently installed. Attempting to do so will result in a "Flash Write Failure."
⚠️ Odin Requirements: Always use Odin version 3.14.4 or newer for SM-G996U1 to ensure proper communication with the UFS 3.1 storage.
⚠️ Power Management: Maintain at least a 50% battery charge. A power failure during the "System" partition write can lead to a hard-brick state.

Expert Recommendation: Avoid modified "pre-rooted" files from unverified mirrors. Utilizing this official repository ensures your SM-G996U1 maintains its Knox integrity and receives OTA updates seamlessly. Choose stability; download official firmware today.

Step-by-Step Flashing Instruction

To restore or update your SM-G996U1, use the latest Odin flash tool. This process will fix system bugs and bootloops.

  1. Preparation: Download the firmware archive and extract the .tar.md5 files.
  2. Odin: Open Odin3 v3.14.4 (or newer) on your computer.
  3. Download Mode: Power off your Samsung Galaxy S21+ 5G. Hold Vol Up + Vol Down and plug it into the PC via USB.
  4. Load Files: Select files for each slot: BL, AP, CP, and CSC.
  5. Flash: Click Start. Wait for the green "PASS!" box to appear.
Important: Use HOME_CSC to keep your files and settings. Use CSC for a complete factory reset.

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