Sunmi devices often come with a locked bootloader. You will need to check if your specific firmware version allows for unlocking via fastboot .
Advanced developers root the V2 to flash custom kernels that optimize battery life, overclock the CPU (Qualcomm Snapdragon), or enable unsupported USB peripherals. sunmi v2 root
Some specialized APKs require root permissions to interact with the printer or NFC hardware directly. Sunmi devices often come with a locked bootloader