
Samsung Galaxy J1 Mini
The latest firmware for Samsung Galaxy J1 Mini (SM-J105M) is J105MUBU0ARC1 with Android 5.1.1 (Lollipop), released on May 1, 2019 for 16 regions (CSC). Every official firmware build for SM-J105M, 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/J105MUBU0ARC1
All 18 builds in our database run Android 5.1.1 (Lollipop). The newest build, J105MUBU0ARC1, was released on May 1, 2019. No new build has appeared for 91 months, so regular updates for this model have most likely ended.
Specifications of SM-J105, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.

SM-J105Y

SM-J100VPP

SM-J106M

SM-J200GU

SM-J110M
The newest firmware for SM-J105M runs Android 5.1.1 (Lollipop): build J105MUBU0ARC1, released on May 1, 2019.
The latest build for SM-J105M, J105MUBU0ARC1, was released on May 1, 2019 (7 years ago).
SM-J105M has had no new firmware for 91 months, so regular updates have most likely ended.
Yes, all firmware files for SM-J105M are 100% official, original, and obtained directly from Samsung servers.
To flash SM-J105M, 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-J105M.