
Samsung Galaxy Tab S6 Lite
Every official firmware build for SM-P619N, 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/P619NKOSACYE1
Box codes of SM-P619N for different colors and markets. Firmware is chosen by the model code SM-P619N and your region (CSC), not by the SKU.

SM-P580X

SM-P610X

SM-P620

SM-P605V

SM-P605L

SM-P605K

SM-P625

SM-P907A
You can find the firmware on the model: SM-P619N page.
Yes, all firmware files for SM-P619N are 100% official, original, and obtained directly from Samsung servers.
To flash SM-P619N, 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-P619N.