Latest Samsung Galaxy Watch4 44mm (SM-R870) - KOO firmware

Samsung Galaxy Watch4 44mm (SM-R870) firmware for Korea (KOO): 1 build in the SamMobile archive, newest first. The latest is R870XXS2JZE1 (Android 16, built 21 May 2026). Open a build to download it, or switch region with the country selector.

SM-R875F SM-R875U

Model		Build date	PDA	Version
SM-R870	Korea	2026-05-21	R870XXS2JZE1	16

Model	Country/Carrier
SM-R870	Korea
Build date	PDA
2026-05-21	R870XXS2JZE1
Version
16

Model		Build date	PDA	Version
SM-R875N	Korea	2024-12-27	R875NKOU1DXL1	14
SM-R875N	Korea	2026-05-21	R875NKOS2EZE1	16
SM-R875N	Korea	2022-11-14	R875NKOU1BVK6	11

Model	Country/Carrier
SM-R875N	Korea
Build date	PDA
2024-12-27	R875NKOU1DXL1
Version
14

Model	Country/Carrier
SM-R875N	Korea
Build date	PDA
2026-05-21	R875NKOS2EZE1
Version
16

Model	Country/Carrier
SM-R875N	Korea
Build date	PDA
2022-11-14	R875NKOU1BVK6
Version
11

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Latest Samsung Galaxy Watch4 44mm (SM-R870) - KOO firmware

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