Galaxy Z Fold3 5G SC-55B updates & firmware

This page tracks every software update Samsung's update servers list for the Samsung Galaxy Z Fold3 5G (SC-55B). The latest stable build is SC55BOMS1EZH2 (Android 15, security update), first released on Oct 7, 2026. Samsung has published 23 stable builds for this model since Sep 9, 2021: 6 security and 17 feature updates, from Android 11 to Android 15. The current bootloader (binary) version is 1. A device on bit 1 only accepts firmware with bit 1 or higher – see downgrading and the bootloader bit.

Rollout: build SC55BOMS1EZH2 (Android 15 (One UI 7)) is live in all 1 regions, first released on Oct 7, 2026 in DCM (Japan (docomo)).

Latest build: SC55BOMS1EZH2
Released: Oct 7, 2026
Android: Android 15
Bootloader bit: 1
Regions: 1
Stable builds: 23

Update policy

Samsung has not published an update commitment for the Galaxy Z Fold3 5G. According to our data it is on Android 15 (One UI 7), last build released Oct 7, 2026.

Compare all models: Samsung update policy by model.

Latest firmware by region (CSC)

Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.

CSC	Region	Latest build	Android	Released	Builds
`DCM`	Japan (docomo)	`SC55BOMS1EZH2`	Android 15	Oct 7, 2026	23

Firmware history (23 builds)

Every stable build (PDA version) Samsung has published for the SC-55B, newest first. “Released” is the earliest date the build appeared on Samsung's servers in any region (how dates work). “pulled” means Samsung no longer serves the file for that build, usually because newer builds replaced it (details).

Build (PDA)	Released	Android	Type	Bit	Regions	File
`SC55BOMS1EZH2`	Oct 7, 2026	Android 15	Security	1	1	on server
`SC55BOMS1EZE1`	Jun 29, 2026	Android 15	Security	1	1	on server
`SC55BOMU1EZC1`	Apr 16, 2026	Android 15	Feature	1	1	on server
`SC55BOMS1EYK1`	Feb 10, 2026	Android 15	Security	1	1	on server
`SC55BOMU1EYF4`	Jul 14, 2025	Android 15	Feature	1	1	on server
`SC55BOMS1DYB1`	Feb 27, 2025	Android 14	Security	1	1	on server
`SC55BOMS1DXJ1`	Nov 28, 2024	Android 14	Security	1	1	on server
`SC55BOMU1DXH9`	Oct 17, 2024	Android 14	Feature	1	1	on server
`SC55BOMU1DXDB`	May 22, 2024	Android 14	Feature	1	1	on server
`SC55BOMS1DXA1`	Feb 20, 2024	Android 14	Security	1	1	on server
`SC55BOMU1DWL3`	Jan 30, 2024	Android 14	Feature	1	1	on server
`SC55BOMU1CWH2`	Sep 26, 2023	Android 13	Feature	1	1	on server
`SC55BOMU1CWF2`	Jul 24, 2023	Android 13	Feature	1	1	on server
`SC55BOMU1CWD1`	May 15, 2023	Android 13	Feature	1	1	on server
`SC55BOMU1CWA1`	Feb 27, 2023	Android 13	Feature	1	1	on server
`SC55BOMU1CVKC`	Dec 19, 2022	Android 13	Feature	1	1	on server
`SC55BOMU1BVG2`	Aug 23, 2022	Android 12	Feature	1	1	on server
`SC55BOMU1BVE6`	Jun 2, 2022	Android 12	Feature	1	1	on server
`SC55BOMU1BVD2`	Apr 19, 2022	Android 12	Feature	1	1	on server
`SC55BOMU1BVA7`	Feb 16, 2022	Android 12	Feature	1	1	on server
`SC55BOMU1AUK1`	Dec 6, 2021	Android 11	Feature	1	1	on server
`SC55BOMU1AUJ4`	Nov 4, 2021	Android 11	Feature	1	1	on server
`SC55BOMU1AUH9`	Sep 9, 2021	Android 11	Feature	1	1	on server

How to download SC-55B firmware

We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:

samloader download -m SC-55B -r DCM

Replace DCM with your region code. Step-by-step instructions, including a graphical alternative: How to download Samsung firmware.

Changelog and security patch level

Samsung publishes the release notes for each update, including the security patch level, on its own site. They are listed per region – for example SC-55B / DCM release notes on doc.samsungmobile.com. Each region page here links to the notes for that code. We don't show the patch level ourselves because Samsung's update servers don't report it (why).