
Samsung Galaxy J1 Ace
The latest firmware for Samsung Galaxy J1 Ace (SM-J111F) is J111FXWU0ARL2 with Android 5.1.1 (Lollipop), released on December 6, 2018 for 4 regions (CSC). Every official firmware build for SM-J111F, 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/J111FXWU0ARL2
All 45 builds in our database run Android 5.1.1 (Lollipop). The newest build, J111FXWU0ARL2, was released on December 6, 2018. No new build has appeared for 96 months, so regular updates for this model have most likely ended.
Box codes of SM-J111F for different colors and markets. Firmware is chosen by the model code SM-J111F and your region (CSC), not by the SKU.

SM-J111M

SM-J100VPP

SM-J120A

SM-J210F

SM-J106M
The newest firmware for SM-J111F runs Android 5.1.1 (Lollipop): build J111FXWU0ARL2, released on December 6, 2018.
The latest build for SM-J111F, J111FXWU0ARL2, was released on December 6, 2018 (7 years ago).
SM-J111F has had no new firmware for 96 months, so regular updates have most likely ended.
Yes, all firmware files for SM-J111F are 100% official, original, and obtained directly from Samsung servers.
To flash SM-J111F, 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-J111F.