
The SC7731E chipset is widely used in budget phones, tablets, and even car head units. This is a non-exhaustive list of devices confirmed to use the sp7731e_1h10_native firmware build:
Extract your downloaded SP7731E 1H10 firmware and the SPD Upgrade Tool on your PC.
firmware can be difficult because these "generic" Spreadtrum-based firmwares are often specific to the device manufacturer (such as car head units, dash cams, or budget tablets).