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Phone · Samsung Galaxy Z Fold8 Ultra
Stock firmware and official updates for the Samsung Galaxy Z Fold8 Ultra (SCG39), by region.
Japan KDIBuildSCG39KDU1AZI6AndroidAndroid 17Security patchSep 2026ReleasedOct 1, 2026DetailsWhat's newJapan SJPBuildSCG39KDU1AZI6Samsung's official release notes, newest first.
• Stability and reliability Device behavior has been improved. • Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 2 CSCs: KDI, SJP
Source: Samsung• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 2 CSCs: KDI, SJP
Source: Samsung• Stability and reliability Device behavior has been improved. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 2 CSCs: KDI, SJP
Source: SamsungTaken from the SM-F976B; this model can differ (chipset, network bands).
