Please support the AM8 Pro with dual-system (Android and CoreELEC) flashing into eMMC

Please support the AM8 Pro with dual-system (Android and CoreELEC) flashing into eMMC.
Currently, the AM8 Pro can only run CoreELEC via an external TF card. However, it is evident that flashing it into the eMMC results in significantly faster operation. Unfortunately, at present, flashing CoreELEC into the eMMC only supports a single system.

Would love this as well, but the team would have already done it if it was possible.

It is possible but decided not to support it.

I think this way still works: Homatics Box R 4K Plus - #3119 by vpeter
Still need USB/SD to start booting but then system runs from eMMC.

I have tried using that way on my sk1 but it cannot mount /dev/data or /dev/userdata.

Not working on all devices. Nothing to do.

Can confirm, on AM8 Pro does not work either, the android partition is not reachable, even with workaround it will not gonna work.