Samsung Galaxy S21 Ultra (USA) is a samsung device (codename: sm-g998u). FirmwareMirror hosts 117 verified firmware builds, covering: CCT, SPR, CHA. Available as official firmware. Last updated: February 2026. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy S21 Ultra (USA) (sm-g998u). All firmware files include MD5 hash verification and are available for direct download.
| Version | Method | Size | Release Date | MD5 Hash | Download |
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| G998USQU9FWK9/G998UOYN9FWK9/G998USQU9FWK9 | Odin | 2.26 GB | 2023-11-01 |
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| G998USQS9EWI8/G998UOYN9EWI8/G998USQS9EWI8 | Odin | 335.14 MB | 2023-09-01 |
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| G998USQS9EWI7/G998UOYN9EWI7/G998USQS9EWI7 | Odin | 335.95 MB | 2023-09-01 |
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| G998USQU9FWL6/G998UOYN9FWL6/G998USQU9FWL6 | Odin | 2.14 GB | 2023-12-01 |
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| G998USQU9FWK5/G998UOYN9FWK5/G998USQU9FWK5 | Odin | 2.26 GB | 2023-11-01 |
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| G998USQS9FXA4/G998UOYN9FXA4/G998USQS9FXA4 | Odin | 2.14 GB | 2024-01-01 |
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| G998USQS9FXA3/G998UOYN9FXA3/G998USQS9FXA3 | Odin | 2.25 GB | 2024-01-01 |
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| G998USQS9FXA2/G998UOYN9FXA2/G998USQS9FXA2 | Odin | 2.26 GB | 2024-01-01 |
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| G998USQS9FWL2/G998UOYN9FWL2/G998USQS9FWL2 | Odin | 2.26 GB | 2023-12-01 |
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| G998USQU9EWL2/G998UOYN9EWL2/G998USQU9EWL2 | Odin | 2.77 GB | 2023-12-01 |
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| G998USQS9EWK2/G998UOYN9EWK2/G998USQS9EWK2 | Odin | 326.88 MB | 2023-11-01 |
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| G998USQS9EWI2/G998UOYN9EWI2/G998USQS9EWI2 | Odin | 349.71 MB | 2023-09-01 |
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| G998USQS9FXA1/G998UOYN9FXA1/G998USQS9FXA1 | Odin | 2.09 GB | 2024-01-01 |
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| G998USQS9FWL1/G998UOYN9FWL1/G998USQS9FWL1 | Odin | 2.26 GB | 2023-12-01 |
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| G998USQS9EWK1/G998UOYN9EWK1/G998USQS9EWK1 | Odin | 342.59 MB | 2023-11-01 |
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| G998USQS9EWI1/G998UOYN9EWI1/G998USQS9EWI1 | Odin | 351.91 MB | 2023-09-01 |
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| G998USQU9FWKC/G998UOYN9FWKC/G998USQU9FWKC | Odin | 2.09 GB | 2023-11-01 |
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| G998USQU8EWH6/G998UOYN8EWH6/G998USQU8EWH6 | Odin | 354.82 MB | 2023-08-01 |
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| G998USQU8EWI5/G998UOYN8EWI5/G998USQU8EWI5 | Odin | 340.4 MB | 2023-09-01 |
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| G998USQS8EWH1/G998UOYN8EWH1/G998USQS8EWH1 | Odin | 1.36 GB | 2023-08-01 |
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| G998USQS8EWG1/G998UOYN8EWG1/G998USQS8EWG1 | Odin | 1.36 GB | 2023-07-01 |
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| G998USQS8EWF1/G998UOYN8EWF1/G998USQS8EWF1 | Odin | 1.36 GB | 2023-06-01 |
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| G998USQU7EWE5/G998UOYN7EWE5/G998USQU7EWE5 | Odin | 1.37 GB | 2023-05-01 |
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| G998USQU7EWF4/G998UOYN7EWF4/G998USQU7EWF4 | Odin | 1.37 GB | 2023-06-01 |
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| G998USQS7EWF1/G998UOYN7EWF1/G998USQS7EWF1 | Odin | 322.6 MB | 2023-06-01 |
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| G998USQS6EWD5/G998UOYN6EWD5/G998USQS6EWD5 | Odin | 343.64 MB | 2023-04-01 |
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| G998USQS6EWD4/G998UOYN6EWD4/G998USQS6EWD4 | Odin | 347.97 MB | 2023-04-01 |
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| G998USQU6EWD3/G998UOYN6EWD3/G998USQU6EWD3 | Odin | 353.83 MB | 2023-04-01 |
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| G998USQU6EWD1/G998UOYN6EWD1/G998USQU6EWD1 | Odin | 356.62 MB | 2023-04-01 |
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| G998USQS6EWCA/G998UOYN6EWCA/G998USQS6EWCA | Odin | 1.1 GB | 2023-03-01 |
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| G998USQSEGYA5/G998UOYNEGYA5/G998USQSEGYA5 | Odin | 3.51 GB | 2025-01-01 |
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| G998USQU5DVL9/G998UOYN5DVL9/G998USQU5DVL9 | Odin | 1.78 GB | 2022-12-01 |
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| G998USQU5DVK9/G998UOYN5DVK9/G998USQU5DVK9 | Odin | 1.83 GB | 2022-11-01 |
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| G998USQU5CVH9/G998UOYN5CVH9/G998USQU5CVH9 | Odin | 549.75 MB | 2022-08-01 |
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| G998USQU5CVG9/G998UOYN5CVG9/G998USQU5CVG9 | Odin | 669.63 MB | 2022-07-01 |
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| G998USQU5CVF9/G998UOYN5CVF9/G998USQU5CVF9 | Odin | 1.37 GB | 2022-06-01 |
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| G998USQU5DWA8/G998UOYN5DWA8/G998USQU5DWA8 | Odin | 1.82 GB | 2023-01-01 |
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| G998USQS5CVI8/G998UOYN5CVI8/G998USQS5CVI8 | Odin | 2.41 GB | 2022-09-01 |
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| G998USQU5CVH8/G998UOYN5CVH8/G998USQU5CVH8 | Odin | 280.42 MB | 2022-08-01 |
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| G998USQU5CVF8/G998UOYN5CVF8/G998USQU5CVF8 | Odin | 1.05 GB | 2022-06-01 |
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| G998USQU5CVE8/G998UOYN5CVE8/G998USQU5CVE8 | Odin | 1.17 GB | 2022-05-01 |
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| G998USQS5DVK7/G998UOYN5DVK7/G998USQS5DVK7 | Odin | 1.8 GB | 2022-11-01 |
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| G998USQS5BVA6/G998UOYN5BVA6/G998USQS5BVA6 | Odin | 2.07 GB | 2022-01-01 |
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| G998USQS5DWA5/G998UOYN5DWA5/G998USQS5DWA5 | Odin | 1.79 GB | 2023-01-01 |
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| G998USQU5CVG4/G998UOYN5CVG4/G998USQU5CVG4 | Odin | 677.37 MB | 2022-07-01 |
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| G998USQU5CVC4/G998UOYN5CVC4/G998USQU5CVC4 | Odin | 1.25 GB | 2022-03-01 |
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| G998USQS5EWB3/G998UOYN5EWB3/G998USQS5EWB3 | Odin | 1.1 GB | 2023-02-01 |
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| G998USQS5DVL3/G998UOYN5DVL3/G998USQS5DVL3 | Odin | 1.66 GB | 2022-12-01 |
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| G998USQU5DVK3/G998UOYN5DVK3/G998USQU5DVK3 | Odin | 1.88 GB | 2022-11-01 |
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| G998USQU5CVF3/G998UOYN5CVF3/G998USQU5CVF3 | Odin | 328.31 MB | 2022-06-01 |
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| G998USQU5CVF2/G998UOYN5CVF2/G998USQU5CVF2 | Odin | 831.67 MB | 2022-06-01 |
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| G998USQS5DVL1/G998UOYN5DVL1/G998USQS5DVL1 | Odin | 1.86 GB | 2022-12-01 |
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| G998USQU5CVF1/G998UOYN5CVF1/G998USQU5CVF1 | Odin | 687.17 MB | 2022-06-01 |
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| G998USQU5EWAI/G998UOYN5EWAI/G998USQU5EWAI | Odin | 1.1 GB | 2023-01-01 |
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| G998USQU5CVIF/G998UOYN5CVIF/G998USQU5CVIF | Odin | 2.3 GB | 2022-09-01 |
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| G998USQS5CVHB/G998UOYN5CVHB/G998USQS5CVHB | Odin | 290.2 MB | 2022-08-01 |
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| G998USQS5CVHC/G998UOYN5CVHC/G998USQS5CVHC | Odin | 550.21 MB | 2022-08-01 |
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| G998USQS5CVGA/G998UOYN5CVGA/G998USQS5CVGA | Odin | 666.47 MB | 2022-07-01 |
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| G998USQU5CVGB/G998UOYN5CVGB/G998USQU5CVGB | Odin | 669.04 MB | 2022-07-01 |
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| G998USQU5CVDB/G998UOYN5CVDB/G998USQU5CVDB | Odin | 1.11 GB | 2022-04-01 |
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| G998USQU5CVDL/G998UOYN5CVDL/G998USQU5CVDL | Odin | 768.76 MB | 2022-04-01 |
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| G998USQS5CVCB/G998UOYN5CVCB/G998USQS5CVCB | Odin | 1.25 GB | 2022-03-01 |
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| G998USQU5CVCC/G998UOYN5CVCC/G998USQU5CVCC | Odin | 933.05 MB | 2022-03-01 |
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| G998USQU5CVCG/G998UOYN5CVCG/G998USQU5CVCG | Odin | 841.84 MB | 2022-03-01 |
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| G998USQU5BULJ/G998UOYN5BULJ/G998USQU5BULJ | Odin | 2.07 GB | 2021-12-01 |
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| G998USQSEGXJ4/G998UOYNEGXJ4/G998USQSEGXJ4 | Odin | 327.05 MB | 2024-10-01 |
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| G998USQSAFXD4/G998UOYNAFXD4/G998USQSAFXD4 | Odin | 2.1 GB | 2024-04-01 |
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| G998USQSAFXC4/G998UOYNAFXC4/G998USQSAFXC4 | Odin | 2.1 GB | 2024-03-01 |
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| G998USQU4BUK9/G998UOYN4BUK9/G998USQU4BUK9 | Odin | 351.65 MB | 2021-11-01 |
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| G998USQU4BUK7/G998UOYN4BUK7/G998USQU4BUK7 | Odin | 2.05 GB | 2021-11-01 |
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| G998USQU4AUI7/G998UOYN4AUI7/G998USQU4AUI7 | Odin | 291.64 MB | 2021-09-01 |
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| G998USQU4AUF5/G998UOYN4AUF5/G998USQU4AUF5 | Odin | 1.19 GB | 2021-06-01 |
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| G998USQS4AUI1/G998UOYN4AUI1/G998USQS4AUI1 | Odin | 363.18 MB | 2021-09-01 |
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| G998USQS4BULC/G998UOYN4BULC/G998USQS4BULC | Odin | 613.06 MB | 2021-12-01 |
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| G998USQS4BUKK/G998UOYN4BUKK/G998USQS4BUKK | Odin | 2.16 GB | 2021-11-01 |
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| G998USQU4BUKF/G998UOYN4BUKF/G998USQU4BUKF | Odin | 2.16 GB | 2021-11-01 |
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| G998USQS4AUIN/G998UOYN4AUIN/G998USQS4AUIN | Odin | 2.7 GB | 2021-09-01 |
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| G998USQS4AUIR/G998UOYN4AUIR/G998USQS4AUIR | Odin | 2.68 GB | 2021-09-01 |
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| G998USQU4AUIL/G998UOYN4AUIL/G998USQU4AUIL | Odin | 280.03 MB | 2021-09-01 |
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| G998USQU4AUGE/G998UOYN4AUGE/G998USQU4AUGE | Odin | 1.16 GB | 2021-07-01 |
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| G998USQU4AUGQ/G998UOYN4AUGQ/G998USQU4AUGQ | Odin | 298.06 MB | 2021-07-01 |
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| G998USQS4AUFD/G998UOYN4AUFD/G998USQS4AUFD | Odin | 1.19 GB | 2021-06-01 |
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| G998USQSEGXK3/G998UOYNEGXK3/G998USQSEGXK3 | Odin | 330.29 MB | 2024-11-01 |
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| G998USQSCGXF3/G998UOYNCGXF3/G998USQSCGXF3 | Odin | 351.58 MB | 2024-06-01 |
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| G998USQSAFXD3/G998UOYNAFXD3/G998USQSAFXD3 | Odin | 2.26 GB | 2024-04-01 |
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| G998USQU3AUDB/G998UOYN3AUDB/G998USQU3AUDB | Odin | 1.24 GB | 2021-04-01 |
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| G998USQU3AUDD/G998UOYN3AUDD/G998USQU3AUDD | Odin | 1.24 GB | 2021-04-01 |
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| G998USQSGHYF2/G998UOYNGHYF2/G998USQSGHYF2 | Odin | 360.31 MB | 2025-06-01 |
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| G998USQSFHYE2/G998UOYNFHYE2/G998USQSFHYE2 | Odin | 337.11 MB | 2025-05-01 |
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| G998USQSDGXJ2/G998UOYNDGXJ2/G998USQSDGXJ2 | Odin | 323.34 MB | 2024-10-01 |
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| G998USQSCGXH2/G998UOYNCGXH2/G998USQSCGXH2 | Odin | 335.08 MB | 2024-08-01 |
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| G998USQSBGXE2/G998UOYNBGXE2/G998USQSBGXE2 | Odin | 366.5 MB | 2024-05-01 |
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| G998USQSAFXD2/G998UOYNAFXD2/G998USQSAFXD2 | Odin | 2.13 GB | 2024-04-01 |
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| G998USQSAFXC2/G998UOYNAFXC2/G998USQSAFXC2 | Odin | 2.26 GB | 2024-03-01 |
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| G998USQU2AUC8/G998UOYN2AUC8/G998USQU2AUC8 | Odin | 1.85 GB | 2021-03-01 |
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| G998USQU2AUB5/G998UOYN2AUB5/G998USQU2AUB5 | Odin | 1.94 GB | 2021-02-01 |
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| G998USQSJHZB1/G998UOYNJHZB1/G998USQSJHZB1 | Odin | 798.24 MB | 2026-02-01 |
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| G998USQSIHYL1/G998UOYNIHYL1/G998USQSIHYL1 | Odin | 336.87 MB | 2025-12-01 |
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| G998USQSHHYI1/G998UOYNHHYI1/G998USQSHHYI1 | Odin | 352.7 MB | 2025-09-01 |
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| G998USQSBGXF1/G998UOYNBGXF1/G998USQSBGXF1 | Odin | 359.3 MB | 2024-06-01 |
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| G998USQSAFXD1/G998UOYNAFXD1/G998USQSAFXD1 | Odin | 2.26 GB | 2024-04-01 |
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| G998USQU1AUA3/G998UOYN1AUA3/G998USQU1AUA3 | Odin | 1.91 GB | 2021-01-01 |
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| G998USQU1AUAG/G998UOYN1AUAG/G998USQU1AUAG | Odin | 1.93 GB | 2021-01-01 |
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| G998USQU1AUAJ/G998UOYN1AUAJ/G998USQU1AUAJ | Odin | 2.03 GB | 2021-01-01 |
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| G998USQU1ATLF/G998UOYN1ATLF/G998USQU1ATLF | Odin | 2.18 GB | N/A |
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| G998USQU1ATLI/G998UOYN1ATLI/G998USQU1ATLI | Odin | 2.21 GB | N/A |
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| G998USQSJHZAA/G998UOYNJHZAA/G998USQSJHZAA | Odin | 324.91 MB | 2026-01-01 |
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| G998USQUEHYDA/G998UOYNEHYDA/G998USQUEHYDA | Odin | 349.31 MB | 2025-04-01 |
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| G998USQSEGXLB/G998UOYNEGXLB/G998USQSEGXLB | Odin | 331.25 MB | 2024-12-01 |
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| G998USQUCGXGA/G998UOYNCGXGA/G998USQUCGXGA | Odin | 328.92 MB | 2024-07-01 |
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| G998USQUAGXDE/G998UOYNAGXDE/G998USQUAGXDE | Odin | 373.1 MB | 2024-04-01 |
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| G998USQSAFXBC/G998UOYNAFXBC/G998USQSAFXBC | Odin | 2.26 GB | 2024-02-01 |
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| G998USQSAFXBD/G998UOYNAFXBD/G998USQSAFXBD | Odin | 2.13 GB | 2024-02-01 |
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| G998USQSAFXAE/G998UOYNAFXAE/G998USQSAFXAE | Odin | 2.26 GB | 2024-01-01 |
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| G998USQSAFXAF/G998UOYNAFXAF/G998USQSAFXAF | Odin | 2.13 GB | 2024-01-01 |
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| G998USQSAFXAG/G998UOYNAFXAG/G998USQSAFXAG | Odin | 2.1 GB | 2024-01-01 |
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| G998USQSAFXAI/G998UOYNAFXAI/G998USQSAFXAI | Odin | 2.26 GB | 2024-01-01 |
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Versions: SM-G998B, SM-G998B/DS (International); SM-G998U (USA); SM-G998U1 (USA unlocked); SM-G998W (Canada); SM-G998N (Korea); SM-G9980 (China)
| Network | Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| CDMA 800 / 1900 & TD-SCDMA | ||
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | |
| CDMA2000 1xEV-DO | ||
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1 | |
| 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G998B | ||
| 5G bands | 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1 | |
| 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G998B | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL) |
| Launch | Announced | 2021, January 14 |
|---|---|---|
| Status | Available. Released 2021, January 29 |
| Body | Dimensions | 165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in) |
|---|---|---|
| Weight | 227 g (Sub6), 229 g (mmWave) (8.01 oz) | |
| Build | Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame | |
| SIM | · Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time) | |
| IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus support |
| Display | Type | Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak) |
|---|---|---|
| Size | 6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio) | |
| Resolution | 1440 x 3200 pixels, 20:9 ratio (~515 ppi density) | |
| Protection | Corning Gorilla Glass Victus |
| Platform | OS | Android 11, up to 4 major Android upgrades, One UI 7 |
|---|---|---|
| Chipset | Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China | |
| CPU | Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China | |
| GPU | Mali-G78 MP14 - International Adreno 660 - USA/China |
| Memory | Card slot | No |
|---|---|---|
| Internal | 128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM | |
| UFS 3.1 |
| Main Camera | Quad | 108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS 10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video |
|---|---|---|
| Features | Laser AF, LED flash, auto-HDR, panorama | |
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS |
| Selfie camera | Single | 40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF |
|---|---|---|
| Features | HDR | |
| Video | 4K@30/60fps, 1080p@30fps |
| Sound | Loudspeaker | Yes, with stereo speakers |
|---|---|---|
| 3.5mm jack | No | |
| High-bitrate audio support |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 5.2, A2DP, LE | |
| Positioning | GPS, GLONASS, BDS, GALILEO | |
| NFC | Yes | |
| Radio | FM radio (Snapdragon model only; market/operator dependent) | |
| USB | USB Type-C 3.2, OTG |
| Features | Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
|---|---|---|
| Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support |
| Battery | Type | Li-Ion 5000 mAh |
|---|---|---|
| Charging | 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless |
| Misc | Colors | Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy |
|---|---|---|
| Models | SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980 | |
| SAR | 0.77 W/kg (head) 1.02 W/kg (body) | |
| SAR EU | 0.71 W/kg (head) 1.58 W/kg (body) | |
| Price | $ 244.44 / € 235.72 / £ 212.99 |
| Our Tests | Performance | AnTuTu: 657150 (v8) GeekBench: 3518 (v5.1) GFXBench: 33fps (ES 3.1 onscreen) |
|---|---|---|
| Display | 1023 nits max brightness (measured) | |
| Camera | Photo / Video | |
| Loudspeaker | -25.5 LUFS (Very good) | |
| Battery (old) | Endurance rating 114h | |
A: Yes — official firmware from the manufacturer is generally safe when you match your device's exact model number and region. Flashing the wrong region or modified firmware can cause issues.
A: Samsung Galaxy S21 Ultra (USA) firmware is flashed using Odin. See the step-by-step guide above for the full procedure.
A: Some devices allow downgrading, others have anti-rollback protection that blocks it. Check the version-specific notes on each ROM page, or your model's community forum, before attempting a downgrade.
A: First, verify the firmware matches your exact model code (e.g. SM-S938B for Samsung, or the CPH-number for OPPO). Reinstall the manufacturer's USB drivers, use a rear USB 2.0 port directly on your PC, and retry. The troubleshooting box above the FAQ covers the most common failure modes.
