
Samsung GALAXY J1
The latest firmware for Samsung GALAXY J1 (SM-J100VPP) is J100VPPVRU4ARA2 with Android 5.1.1, released on January 7, 2018 for 1 region (CSC). Every official firmware build for SM-J100VPP, 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/J100VPPVRU4ARA2
All 2 builds in our database run Android 5.1.1. The newest build, J100VPPVRU4ARA2, was released on January 7, 2018. No new build has appeared for 107 months, so regular updates for this model have most likely ended.
Specifications of SM-J100H, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-J327VPP

SM-J260A

SM-J120P

SM-J737A

SM-J727A

SM-J727VPP

SM-J327A

SM-J327V
The newest firmware for SM-J100VPP runs Android 5.1.1: build J100VPPVRU4ARA2, released on January 7, 2018.
The latest build for SM-J100VPP, J100VPPVRU4ARA2, was released on January 7, 2018 (8 years ago).
SM-J100VPP has had no new firmware for 107 months, so regular updates have most likely ended.
Yes, all firmware files for SM-J100VPP are 100% official, original, and obtained directly from Samsung servers.
To flash SM-J100VPP, 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-J100VPP.