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Samsung Galaxy S21 Ultra 5G (SM-G998U) - Build G998USQSJHZAA

Stock Firmware • Download • Android 15

Samsung SM-G998U — Firmware G998USQSJHZAA

Device: Samsung Samsung Galaxy S21 Ultra 5G

Model Code: SM-G998U

Series: Galaxy G

Build Number: G998USQSJHZAA

Region (CSC): VZW

Android Version: v15

Release Date: 2026-02-02 00:00

User Rating: ★★★★☆ 9.3/10

Downloads: 121

Important: This is an official Samsung Service ROM (4-file format). Use Odin to flash. Includes PIT partition. For repair/update purposes only.

Step-by-Step Flashing Instructions

  1. Preparation: Download this firmware file.
  2. Odin: Download Odin3 v3.14.4 or newer.
  3. Download Mode: Power off your Samsung Galaxy S21 Ultra 5G. Hold Vol Up + Vol Down and connect USB.
  4. Load Files: Open the downloaded firmware. Select BL, AP, CP, CSC files in Odin.
  5. Flash: Click Start. Wait for "PASS!" message.