Just Purchased - No Video POST/BIOS

[bytebashers]

Just purhased. Made no changes to it, but dont have any feed outside a running OS.
Tested with DELL, HP und LENOVO.

In nanoKVM CLI it shows the errors below while my target endpoint is in BIOS . When finally booted into Windows, hdmi message appears and it works as expected:

[2025-08-13 06:10:15.298] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:16.322] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:17.346] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:18.370] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:19.394] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:20.418] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:21.442] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:22.466] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:23.490] [error] [cgo.go:59] failed to read kvm image: -1
[2025-08-13 06:10:24.514] [error] [cgo.go:59] failed to read kvm image: -1
[hdmi] get new res : 1920 * 1080
[hdmi] get res : 1920 * 1080
2025/08/13 06:10:44 http: TLS handshake error from 192.168.1.113:62349: remote error: tls: unknown certificate
2025/08/13 06:10:44 http: TLS handshake error from 192.168.1.113:62351: remote error: tls: unknown certificate
mmf_add_vi_channel..
mmf_add_vi_channel..
mmf_add_vi_channel..

Where does the image version 1.4.1 come from ? I couldnt find it in the documentation.