
Samsung Galaxy J1 Ace
The latest firmware for Samsung Galaxy J1 Ace (SM-J110H) is J110HXUU0AQK2 with Android 4.4.4 (KitKat), released on November 8, 2017 for 1 region (CSC). Every official firmware build for SM-J110H, 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/J110HXUU0AQK2
All 42 builds in our database run Android 4.4.4 (KitKat). The newest build, J110HXUU0AQK2, was released on November 8, 2017. No new build has appeared for 109 months, so regular updates for this model have most likely ended.
Box codes of SM-J110H for different colors and markets. Firmware is chosen by the model code SM-J110H and your region (CSC), not by the SKU.

SM-J110M

SM-J100VPP

SM-J120A

SM-J210F

SM-J106M
The newest firmware for SM-J110H runs Android 4.4.4 (KitKat): build J110HXUU0AQK2, released on November 8, 2017.
The latest build for SM-J110H, J110HXUU0AQK2, was released on November 8, 2017 (8 years ago).
SM-J110H has had no new firmware for 109 months, so regular updates have most likely ended.
Yes, all firmware files for SM-J110H are 100% official, original, and obtained directly from Samsung servers.
To flash SM-J110H, 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-J110H.