This specific device string often refers to units running with MCU versions like TS9 . The "1h10_vmm" suffix is part of the build fingerprint that identifies the specific board and software branch used by the manufacturer. Step-by-Step Firmware Update Guide
or manufacturer support pages). Use an application to unzip the files directly to the root directory of your USB drive. Connect to Unit sp9853i 1h10 vmm firmware update full