
Samsung Galaxy Y Duos
The latest firmware for Samsung Galaxy Y Duos (GT-S6102) is S6102ZSLH2 with Android 2.3.6 (Gingerbread), released on August 13, 2012 for 2 regions (CSC). Every official firmware build for GT-S6102, 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/S6102ZSLH2
All 14 builds in our database run Android 2.3.6 (Gingerbread). The newest build, S6102ZSLH2, was released on August 13, 2012. No new build has appeared for 172 months, so regular updates for this model have most likely ended.
Box codes of GT-S6102 for different colors and markets. Firmware is chosen by the model code GT-S6102 and your region (CSC), not by the SKU.

GT-S7508

GT-S6812

GT-S6500L

GT-S5690L

GT-S5670
The newest firmware for GT-S6102 runs Android 2.3.6 (Gingerbread): build S6102ZSLH2, released on August 13, 2012.
The latest build for GT-S6102, S6102ZSLH2, was released on August 13, 2012 (14 years ago).
GT-S6102 has had no new firmware for 172 months, so regular updates have most likely ended.
Yes, all firmware files for GT-S6102 are 100% official, original, and obtained directly from Samsung servers.
To flash GT-S6102, 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-S6102.