Firmware Downloads
Find and download official MIUI firmware 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 |
|---|---|---|---|---|---|
| R865USQU2JZB6/R865UOYM2JZB6/R865USQU2JZB6 | Odin | 292 B | 2026-02-01 |
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| R865USQU1EVA9/R865UOYM1EVA9/R865USQU1EVA9 | Odin | 318 B | 2022-01-01 |
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| R865USQU1BUH9/R865UOYM1BUH9/R865USQU1BUH9 | Odin | 158 B | 2021-08-01 |
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| R865USQU1FVC8/R865UOYM1FVC8/R865USQU1FVC8 | Odin | 92 B | 2022-03-01 |
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| R865USQU1HXB7/R865UOYM1HXB7/R865USQU1HXB7 | Odin | 1 B | 2024-02-01 |
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| R865USQU1JYL6/R865UOYM1JYL6/R865USQU1JYL6 | Odin | 648 B | 2025-12-01 |
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| R865USQU1GVK6/R865UOYM1GVK6/R865USQU1GVK6 | Odin | 322 B | 2022-11-01 |
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| R865USQU1BUI5/R865UOYM1BUI5/R865USQU1BUI5 | Odin | 535 B | 2021-09-01 |
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| R865USQU1FVD4/R865UOYM1FVD4/R865USQU1FVD4 | Odin | 854 B | 2022-04-01 |
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| R865USQU1HWH3/R865UOYM1HWH3/R865USQU1HWH3 | Odin | 503 B | 2023-08-01 |
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| R865USQU1GWA3/R865UOYM1GWA3/R865USQU1GWA3 | Odin | 95 B | 2023-01-01 |
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| R865USQU1GWB2/R865UOYM1GWB2/R865USQU1GWB2 | Odin | 292 B | 2023-02-01 |
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| R865USQU1GVH2/R865UOYM1GVH2/R865USQU1GVH2 | Odin | 450 B | 2022-08-01 |
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| R865USQU1HWL1/R865UOYM1HWL3/R865USQU1HWL1 | Odin | 228 B | 2023-12-01 |
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| R865USQU1IYI1/R865UOYM1IYI1/R865USQU1IYI1 | Odin | 1 B | 2025-09-01 |
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| R865USQS1IYE1/R865UOYM1IYE1/R865USQS1IYE1 | Odin | 127 B | 2025-05-01 |
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| R865USQU1IXK1/R865UOYM1IXK1/R865USQU1IXK1 | Odin | 444 B | 2024-11-01 |
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| R865USQU1IYCD/R865UOYM1IYCD/R865USQU1IYCD | Odin | 121 B | 2025-03-01 |
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| R865USQU1GWDA/R865UOYM1GWDA/R865USQU1GWDA | Odin | 1 B | 2023-04-01 |
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| R865USQU1DUJC/R865UOYM1DUJC/R865USQU1DUJC | Odin | 648 B | 2021-10-01 |
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Download |
| R865USQU1AUGC/R865UOYM1AUGC/R865USQU1AUGC | Odin | 292 B | 2021-07-01 |
N/A
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Download |
How to Flash Firmware
Steps to Install Firmware:
- Download the ROM: Choose the appropriate firmware version above for your device region
- Backup Your Data: All data will be erased during flashing
- Unlock Bootloader: Required for some devices (check device-specific requirements)
- Download Tools: Download MIUI Flash Tool or use ADB/Fastboot
- Flash the ROM: Follow the tool's instructions to flash the downloaded firmware
- Verify: Restart and verify successful installation
⚠️ Warning: Flashing custom ROMs may void your warranty. Proceed at your own risk.
Frequently Asked Questions
Q: Is it safe to flash official firmware?
A: Yes, flashing official firmware is generally safe and won't void your warranty if done through official methods.
Q: What's the difference between Recovery and Fastboot ROMs?
A: Recovery ROMs are flashed from recovery mode, while Fastboot ROMs require bootloader unlock and ADB tools.
Q: Can I downgrade to an older firmware version?
A: Some devices allow downgrading, but it depends on the device and region. Check device-specific forums first.
Q: What if flashing fails?
A: If flashing fails, try using the official tool, ensure USB drivers are installed, and check device compatibility.