If a recent OTA update made your tablet slow or buggy, the native firmware allows you to downgrade to the stable factory version.

SP7731E 1H10 refers to a specific firmware identifier for low-cost Android head units (car stereos) based on the Unisoc (formerly Spreadtrum) SC7731E

: These are high-traffic repositories for mobile and car stereo ROMs. Searching for "SP7731E 1H10" on these platforms is the most reliable way to find older or "native" versions that are no longer pushed via OTA.