
Samsung Galaxy
The latest firmware for Samsung Galaxy (SC-01H) is SC01HOMU1ARI1 with Android 5.1.1 (Lollipop), released on September 19, 2018 for 1 region (CSC). Every official firmware build for SC-01H, 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/SC01HOMU1ARI1
All 3 builds in our database run Android 5.1.1 (Lollipop). The newest build, SC01HOMU1ARI1, was released on September 19, 2018. No new build has appeared for 98 months, so regular updates for this model have most likely ended.

SC-02D

SC-02B

SC-01E

SC-01D

SC-01C
The newest firmware for SC-01H runs Android 5.1.1 (Lollipop): build SC01HOMU1ARI1, released on September 19, 2018.
The latest build for SC-01H, SC01HOMU1ARI1, was released on September 19, 2018 (8 years ago).
SC-01H has had no new firmware for 98 months, so regular updates have most likely ended.
Yes, all firmware files for SC-01H are 100% official, original, and obtained directly from Samsung servers.
To flash SC-01H, 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 SC-01H.