
Samsung Galaxy S Duos
The latest firmware for Samsung Galaxy S Duos (GT-S7562) is S7562XXBNE2 with Android 4.0.4 (Ice Cream Sandwich), released on May 26, 2014 for 5 regions (CSC). Every official firmware build for GT-S7562, newest first: one row per build with all regions (CSC) that received it.
Each firmware build has its own page at https://samfirm.shop/build/{PDA}, where {PDA} is the build number from the list above. Example: https://samfirm.shop/build/S7562XXBNE2
All 19 builds in our database run Android 4.0.4 (Ice Cream Sandwich). The newest build, S7562XXBNE2, was released on May 26, 2014. No new build has appeared for 151 months, so regular updates for this model have most likely ended.
Box codes of GT-S7562 for different colors and markets. Firmware is chosen by the model code GT-S7562 and your region (CSC), not by the SKU.

GT-S7508

GT-S7500T

GT-S6812

GT-S6500L

GT-S5690L

GT-S5670

GT-S5570I

GT-S5303
The newest firmware for GT-S7562 runs Android 4.0.4 (Ice Cream Sandwich): build S7562XXBNE2, released on May 26, 2014.
The latest build for GT-S7562, S7562XXBNE2, was released on May 26, 2014 (12 years ago).
GT-S7562 has had no new firmware for 151 months, so regular updates have most likely ended.
Yes, all firmware files for GT-S7562 are 100% official, original, and obtained directly from Samsung servers.
To flash GT-S7562, 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-S7562.