
Samsung Galaxy S III (Dual Sim)
The latest firmware for Samsung Galaxy S III (Dual Sim) (SCH-I939D) is I939DKEUBOA1 with Android 4.3 (Jelly), released on January 8, 2015 for 1 region (CSC). Every official firmware build for SCH-I939D, newest first: one row per build with all regions (CSC) that received it.
All 3 builds in our database run Android 4.3 (Jelly). The newest build, I939DKEUBOA1, was released on January 8, 2015. No new build has appeared for 143 months, so regular updates for this model have most likely ended.
The newest firmware for SCH-I939D runs Android 4.3 (Jelly): build I939DKEUBOA1, released on January 8, 2015.
The latest build for SCH-I939D, I939DKEUBOA1, was released on January 8, 2015 (11 years ago).
SCH-I939D has had no new firmware for 143 months, so regular updates have most likely ended.
Yes, all firmware files for SCH-I939D are 100% official, original, and obtained directly from Samsung servers.
To flash SCH-I939D, you need to download the appropriate firmware, put your device into Download Mode, and use the Odin tool to load the BL, AP, CP, and CSC files.
Downgrading is only possible if the bootloader version (binary bit) of the old firmware matches the current one. Always check the binary version before flashing SCH-I939D.