
Samsung GALAXY S4
The latest firmware for Samsung GALAXY S4 (GT-I9515) is I9515XXU1BQD2 with Android 4.4.2 (KitKat), released on April 16, 2017 for 4 regions (CSC). Every official firmware build for GT-I9515, newest first: one row per build with all regions (CSC) that received it.
All 36 builds in our database run Android 4.4.2 (KitKat). The newest build, I9515XXU1BQD2, was released on April 16, 2017. No new build has appeared for 115 months, so regular updates for this model have most likely ended.
Box codes of GT-I9515 for different colors and markets. Firmware is chosen by the model code GT-I9515 and your region (CSC), not by the SKU.
The newest firmware for GT-I9515 runs Android 4.4.2 (KitKat): build I9515XXU1BQD2, released on April 16, 2017.
The latest build for GT-I9515, I9515XXU1BQD2, was released on April 16, 2017 (9 years ago).
GT-I9515 has had no new firmware for 115 months, so regular updates have most likely ended.
Yes, all firmware files for GT-I9515 are 100% official, original, and obtained directly from Samsung servers.
To flash GT-I9515, 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 GT-I9515.