Firmware Downloads
Find and download official Stock ROM for Samsung Galaxy Watch4 40mm LTE (USA carrier) (sm-r865u). All firmware files include MD5 hash verification and are available for direct download.
Samsung Galaxy Watch4 40mm LTE (USA carrier)
| Version | Method | Size | Release Date | MD5 Hash | Download |
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| R865USQU2JZB6/R865UOYM2JZB6/R865USQU2JZB6 | Odin | 292.94 MB | 2026-02-01 |
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| R865USQU1EVA9/R865UOYM1EVA9/R865USQU1EVA9 | Odin | 318.7 MB | 2022-01-01 |
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| R865USQU1BUH9/R865UOYM1BUH9/R865USQU1BUH9 | Odin | 158.19 MB | 2021-08-01 |
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| R865USQU1FVC8/R865UOYM1FVC8/R865USQU1FVC8 | Odin | 92.8 MB | 2022-03-01 |
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| R865USQU1HXB7/R865UOYM1HXB7/R865USQU1HXB7 | Odin | 1.81 GB | 2024-02-01 |
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| R865USQU1JYL6/R865UOYM1JYL6/R865USQU1JYL6 | Odin | 648.62 MB | 2025-12-01 |
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| R865USQU1GVK6/R865UOYM1GVK6/R865USQU1GVK6 | Odin | 322.38 MB | 2022-11-01 |
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| R865USQU1BUI5/R865UOYM1BUI5/R865USQU1BUI5 | Odin | 535.26 MB | 2021-09-01 |
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| R865USQU1FVD4/R865UOYM1FVD4/R865USQU1FVD4 | Odin | 854.71 MB | 2022-04-01 |
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| R865USQU1HWH3/R865UOYM1HWH3/R865USQU1HWH3 | Odin | 503.98 MB | 2023-08-01 |
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| R865USQU1GWA3/R865UOYM1GWA3/R865USQU1GWA3 | Odin | 95.07 MB | 2023-01-01 |
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| R865USQU1GWB2/R865UOYM1GWB2/R865USQU1GWB2 | Odin | 292.91 MB | 2023-02-01 |
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| R865USQU1GVH2/R865UOYM1GVH2/R865USQU1GVH2 | Odin | 450.64 MB | 2022-08-01 |
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| R865USQU1HWL1/R865UOYM1HWL3/R865USQU1HWL1 | Odin | 228.59 MB | 2023-12-01 |
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| R865USQU1IYI1/R865UOYM1IYI1/R865USQU1IYI1 | Odin | 1.71 GB | 2025-09-01 |
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| R865USQS1IYE1/R865UOYM1IYE1/R865USQS1IYE1 | Odin | 127.82 MB | 2025-05-01 |
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| R865USQU1IXK1/R865UOYM1IXK1/R865USQU1IXK1 | Odin | 444.05 MB | 2024-11-01 |
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| R865USQU1IYCD/R865UOYM1IYCD/R865USQU1IYCD | Odin | 121.1 MB | 2025-03-01 |
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| R865USQU1GWDA/R865UOYM1GWDA/R865USQU1GWDA | Odin | 1.7 GB | 2023-04-01 |
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| R865USQU1DUJC/R865UOYM1DUJC/R865USQU1DUJC | Odin | 648.32 MB | 2021-10-01 |
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| R865USQU1AUGC/R865UOYM1AUGC/R865USQU1AUGC | Odin | 292.94 MB | 2021-07-01 |
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More samsung Devices
Frequently Asked Questions
Q: Is it safe to flash official samsung firmware?
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.
Q: What tool do I need to flash Samsung Galaxy Watch4 40mm LTE (USA carrier) firmware?
A: Samsung Galaxy Watch4 40mm LTE (USA carrier) firmware is flashed using Odin. See the step-by-step guide above for the full procedure.
Q: Can I downgrade to an older firmware version?
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.
Q: What if flashing fails?
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.