Hello,
Two years ago I still can boot the s905x-cc with my windows laptop.
But this year when I try to flashing boot the emmc, I keep read those message, and I cannot find anyway to fix that. I already see the device in device manager. but WSL system cannot find it.
Follow the instructions on Libre Computer AML-S905X-CC eMMC Flashing Steps from Linux with pyamlboot
Make sure you follow step 3.