
Samsung Galaxy Ace4 Lite
The latest firmware for Samsung Galaxy Ace4 Lite (SM-G313H) is G313HXXS0AQA4 with Android 4.4.2 (KitKat), released on January 10, 2017 for 1 region (CSC). Every official firmware build for SM-G313H, 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/G313HXXS0AQA4
All 41 builds in our database run Android 4.4.2 (KitKat). The newest build, G313HXXS0AQA4, was released on January 10, 2017. No new build has appeared for 119 months, so regular updates for this model have most likely ended.
Box codes of SM-G313H for different colors and markets. Firmware is chosen by the model code SM-G313H and your region (CSC), not by the SKU.

SM-G313MY

SM-G316MY

SM-G318MZ

SM-G310HN

SM-G5109
The newest firmware for SM-G313H runs Android 4.4.2 (KitKat): build G313HXXS0AQA4, released on January 10, 2017.
The latest build for SM-G313H, G313HXXS0AQA4, was released on January 10, 2017 (9 years ago).
SM-G313H has had no new firmware for 119 months, so regular updates have most likely ended.
Yes, all firmware files for SM-G313H are 100% official, original, and obtained directly from Samsung servers.
To flash SM-G313H, 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 SM-G313H.