chipset can be difficult because these generic Spreadtrum (Unisoc) boards are used by many different "no-name" Android head unit manufacturers. Finding the Right Firmware
Firmware for this specific "1H10" native configuration can often be found on community repositories or manufacturer-specific sites like Needrom. sp7731e+1h10+native+firmware+link
As direct links to firmware files often break or host copyrighted software, here is how you can reliably find the specific file: chipset can be difficult because these generic Spreadtrum
Visit sites that specialize in SPD firmware. You will need to search by the Model Name or the "1H10" code. click the Gear icon (Load Packet)
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Open ResearchDownload.exe , click the Gear icon (Load Packet), and select your .pac file. Start Flashing: Click the Play button (Start Downloading).