This firmware list covers Samsung Galaxy Z Fold8 Ultra, model SM-F976U1. Check the code on your phone before choosing a download.
Compare available builds by region and CSC. Match the software branch on your phone before selecting a package.
| Device | Samsung Galaxy Z Fold8 Ultra |
|---|---|
| Model / identifier | SM-F976U1 |
| Source-listed software | Android 17, One UI 9.0 |
| Region / CSC examples | XAA, ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSG, DSH, FKR, LLA … (full list at source) |
| Latest software release | Oct 7, 2026 |
| Binary / Bit | 3 |
| Newest uploaded firmware | F976U1UES3AZIL / PCT |
| Catalog builds | F976U1UES3AZIL / F976U1OWA3AZIL; F976U1UES3AZIL / F976U1OYM3AZIL |
Comparing the regional listings
The regional download list for SM-F976U1 includes XAA, ACG, AIO. Those entries can show different builds. Compare the CSC shown on your phone with the relevant listing rather than treating this model page as one universal download.
Check the model and software branch
Open Settings → About phone and confirm SM-F976U1. In Software information, compare the installed build and service provider software version with the source listing.
Check the CSC and bootloader revision before choosing a package. A later release date does not by itself establish compatibility, and bootloader restrictions may prevent a downgrade.
For a routine update on a working phone, start with Settings → Software update. If you need to reinstall the software manually, back up your data first and check the installation method for the selected package.