Samsung Galaxy Watch4 Classic (SM-R880) Firmware Overview
What is the latest SM-R880 firmware?
R880ZCS2JZG3, released August 20, 2026 with Android 16. It is a security update on bootloader binary 2. The archive holds 23 official builds across 16 regions (CSC).
Is the Samsung Galaxy Watch4 Classic still getting updates?
Yes. The newest build is from August 2026, and 16 of 16 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-R880 firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 2:
- Binary 2 — since May 2026
All SM-R880 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
R880ZCS2JZG3
Security update
|
2 | CHC | 16 |
2026-08-20 | Download |
|
R880TRS2JZG3
Security update
|
2 | CHC | 16 |
2026-08-20 | Download |
|
R880XXS2JZG3
Security update
|
2 | SEB | 16 |
2026-08-18 | Download |
|
R880TBS2JZG3
Security update
|
2 | KOO | 16 |
2026-08-18 | Download |
|
R880TBS2JZG3
Security update
|
2 | XAA | 16 |
2026-08-18 | Download |
|
R880TBS2JZG3
Security update
|
2 | BRI | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | KOO | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | BTU | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | ARO | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | ATO | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | AFR | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | ACR | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | ZTO | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | BVO | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | XAA | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | XSK | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | AUT | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | BGL | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | BNG | 16 |
2026-08-18 | Download |
|
R880XXS2JZG3
Security update
|
2 | BRI | 16 |
2026-08-18 | Download |
|
R880TRS2JZE1
Security update
|
2 | CHC | 16 |
2026-06-22 | Download |
|
R880XXS2JZE1
Security update
|
2 | ZTO | 16 |
2026-06-15 | Download |
|
R880XXS2JZE1
Security update
|
2 | KOO | 16 |
2026-06-15 | Download |
Latest SM-R880 Firmware by Region
The newest build for each region (CSC) code. Not sure which region your phone uses? See the CSC code guide.
| Region | Latest build | Bit | Android | Date |
|---|---|---|---|---|
| ACR | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| AFR | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| ARO | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| ATO | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| AUT | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| BGL | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| BNG | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| BRI | R880TBS2JZG3 | 2 | 16 | 2026-08-18 |
| BTU | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| BVO | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| CHC | R880ZCS2JZG3 | 2 | 16 | 2026-08-20 |
| KOO | R880TBS2JZG3 | 2 | 16 | 2026-08-18 |
| SEB | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| XAA | R880TBS2JZG3 | 2 | 16 | 2026-08-18 |
| XSK | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
| ZTO | R880XXS2JZG3 | 2 | 16 | 2026-08-18 |
How to Flash SM-R880 Firmware
Put the Samsung Galaxy Watch4 Classic into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 2 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.