
Samsung Galaxy Ace4 Lite
The latest firmware for Samsung Galaxy Ace4 Lite (SM-G318H) is G318HXCU0AQK2 with Android 4.4.4 (KitKat), released on November 29, 2017 for 9 regions (CSC). Every official firmware build for SM-G318H, 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/G318HXCU0AQK2
All 76 builds in our database run Android 4.4.4 (KitKat). The newest build, G318HXCU0AQK2, was released on November 29, 2017. No new build has appeared for 108 months, so regular updates for this model have most likely ended.
Box codes of SM-G318H for different colors and markets. Firmware is chosen by the model code SM-G318H and your region (CSC), not by the SKU.

SM-G318MZ

SM-G316MY

SM-G313MY

SM-G310HN

SM-G5109
The newest firmware for SM-G318H runs Android 4.4.4 (KitKat): build G318HXCU0AQK2, released on November 29, 2017.
The latest build for SM-G318H, G318HXCU0AQK2, was released on November 29, 2017 (8 years ago).
SM-G318H has had no new firmware for 108 months, so regular updates have most likely ended.
Yes, all firmware files for SM-G318H are 100% official, original, and obtained directly from Samsung servers.
To flash SM-G318H, 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-G318H.