
Samsung Galaxy S 4 (Cricket)
The latest firmware for Samsung Galaxy S 4 (Cricket) (SCH-R970C) is R970CVRUFND1_RS with Android 4.4.2 (KitKat), released on April 28, 2014 for 1 region (CSC). Every official firmware build for SCH-R970C, 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/R970CVRUFND1_RS
All 3 builds in our database run Android 4.4.2 (KitKat). The newest build, R970CVRUFND1_RS, was released on April 28, 2014. No new build has appeared for 152 months, so regular updates for this model have most likely ended.

SCH-R970X

SCH-L710

SCH-I939D

SCH-I435

SCH-I545
The newest firmware for SCH-R970C runs Android 4.4.2 (KitKat): build R970CVRUFND1_RS, released on April 28, 2014.
The latest build for SCH-R970C, R970CVRUFND1_RS, was released on April 28, 2014 (12 years ago).
SCH-R970C has had no new firmware for 152 months, so regular updates have most likely ended.
Yes, all firmware files for SCH-R970C are 100% official, original, and obtained directly from Samsung servers.
To flash SCH-R970C, 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 SCH-R970C.