
Samsung Galaxy Note 2 LTE (Korea LG+)
The latest firmware for Samsung Galaxy Note 2 LTE (Korea LG+) (SHV-E250L) is E250LKLUKOH4 with Android 4.4.2 (Jelly), released on August 23, 2015 for 1 region (CSC). Every official firmware build for SHV-E250L, 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/E250LKLUKOH4
All 5 builds in our database run Android 4.4.2 (Jelly). The newest build, E250LKLUKOH4, was released on August 23, 2015. No new build has appeared for 136 months, so regular updates for this model have most likely ended.

SHV-E500L

SHV-E400K

SHV-E370K

SHV-E330L

SHV-E330K

SHV-E310L

SHV-E310K

SHV-E300L
The newest firmware for SHV-E250L runs Android 4.4.2 (Jelly): build E250LKLUKOH4, released on August 23, 2015.
The latest build for SHV-E250L, E250LKLUKOH4, was released on August 23, 2015 (11 years ago).
SHV-E250L has had no new firmware for 136 months, so regular updates have most likely ended.
Yes, all firmware files for SHV-E250L are 100% official, original, and obtained directly from Samsung servers.
To flash SHV-E250L, 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 SHV-E250L.