Stb Erom Upgrade V2.1.0 %7cbest%7c -

What are you running on the computer you plan to use?

https://example.com/stb_erom_v2.1.0.7z MD5: a1f4c8e3d9b2a6f7c0e4d8b3a1f5c2e7 Stb Erom Upgrade V2.1.0 %7CBEST%7C

This indicates the software cannot see the STB. Check that your RS232 cable is a true null-modem cable, verify your COM port assignment, and ensure you only power on the receiver after clicking "Next." What are you running on the computer you plan to use