What (e.g., Windows 10, Linux, embedded OS) are you running?
When downloading and installing TPSK518DPC821 software, keep the following safety precautions and best practices in mind:
: Always cross-reference file hashes (MD5/SHA-256) provided by community members to ensure the file has not been altered. Step-by-Step Installation Best Practices
If the board is completely dead and the USB port receives no power, the bootloader is corrupted. You will need to desolder the SPI Flash IC (usually an 8-pin chip) or use a hardware programmer like the RT809F or RT809H to flash the .bin software directly onto the chip.
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