
Samsung Galaxy E7
The latest firmware for Samsung Galaxy E7 (SM-E700H) is E700HXXS1BRK2 with Android 5.1.1 (KitKat), released on November 20, 2018 for 13 regions (CSC). Every official firmware build for SM-E700H, 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/E700HXXS1BRK2
SM-E700H started on Android 4 and has received 1 major Android upgrade; it now runs Android 5.1.1 (KitKat). The newest build, E700HXXS1BRK2, was released on November 20, 2018. No new build has appeared for 96 months, so regular updates for this model have most likely ended.
Box codes of SM-E700H for different colors and markets. Firmware is chosen by the model code SM-E700H and your region (CSC), not by the SKU.

SM-E700M

SM-E500YZ

SM-E625F

SM-E5260

SM-E426S
The newest firmware for SM-E700H runs Android 5.1.1 (KitKat): build E700HXXS1BRK2, released on November 20, 2018.
The latest build for SM-E700H, E700HXXS1BRK2, was released on November 20, 2018 (7 years ago).
SM-E700H has had no new firmware for 96 months, so regular updates have most likely ended.
Yes, all firmware files for SM-E700H are 100% official, original, and obtained directly from Samsung servers.
To flash SM-E700H, 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-E700H.