Firmware Downloads
Find and download official Stock ROM for Samsung Galaxy Watch Active 2 (40mm) (sm-r830). All firmware files include MD5 hash verification and are available for direct download.
Samsung Galaxy Watch Active 2 (40mm)
| Version | Method | Size | Release Date | MD5 Hash | Download |
|---|---|---|---|---|---|
| R830XXU1DUA7/R830OXA1DUA7/ | Odin | 58.75 MB | 2021-01-01 |
N/A
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Download |
| R830XXU1CTJ5/R830OXA1CTJ5/ | Odin | 98.88 MB | N/A |
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Download |
| R830XXU1FVH4/R830OXA1FVH4/ | Odin | 16.58 MB | 2022-08-01 |
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Download |
| R830XXU1CTI4/R830OXA1CTI4/ | Odin | 117.05 MB | N/A |
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| R830XXU1DUE3/R830OXA1DUE3/ | Odin | 45.43 MB | 2021-05-01 |
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| R830XXU1DUA3/R830OXA1DUA3/ | Odin | 59.21 MB | 2021-01-01 |
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| R830XXU1CTL3/R830OXA1CTL3/ | Odin | 82.78 MB | N/A |
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| R830XXU1FWK2/R830OXA1FWK2/ | Odin | 422.08 MB | 2023-11-01 |
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| R830XXU1EVC2/R830OXA1EVC2/ | Odin | 55.49 MB | 2022-03-01 |
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| R830XXU1EUK2/R830OXA1EUK2/ | Odin | 55.02 MB | 2021-11-01 |
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| R830XXU1DUH1/R830OXA1DUH1/ | Odin | 46.1 MB | 2021-08-01 |
N/A
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| R830XXU1DUD1/R830OXA1DUD1/ | Odin | 57.45 MB | 2021-04-01 |
N/A
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Download |
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 Watch Active 2 (40mm) firmware?
A: Samsung Galaxy Watch Active 2 (40mm) 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.