ZBT Z8102AX eMMC

In case it helps, I got the flash layout from factory firmware:
MT7981> mmc part

Partition Map for MMC device 0-- Partition Type: EFI

Part	Start LBA	End LBA		Name		Attributes			Type GUID						Partition GUID
1	0x00000000	0x00000021	"gpt"		attrs:0x0000000000000000	type:0fc63daf-8483-4772-8e79-3d69d8477de4	(linux)	guid:d65a0088-db5c-11ee-a187-000c29358ede
2	0x00002000	0x000023ff	"u-boot-env"	attrs:0x0000000000000000	type:0fc63daf-8483-4772-8e79-3d69d8477de4	(linux)	guid:19a4763a-6b19-4a4b-a0c4-8cc34f4c2ab9
3	0x00002400	0x000033ff	"factory"	attrs:0x0000000000000000	type:0fc63daf-8483-4772-8e79-3d69d8477de4	(linux)	guid:8142c1b2-1697-41d9-b1bf-a88d76c7213f
4	0x00003400	0x000043ff	"fip"		attrs:0x0000000000000000	type:0fc63daf-8483-4772-8e79-3d69d8477de4	(linux)	guid:18de6587-4f17-4e08-a6c9-d9d3d424f4c5
5	0x00004400	0x000143ff	"kernel"	attrs:0x0000000000000000	type:0fc63daf-8483-4772-8e79-3d69d8477de4	(linux)	guid:971f7556-ef1a-44cd-8b28-0cf8100b9c7e
6	0x00014400	0x00e00000	"rootfs"	attrs:0x0000000000000000	type:0fc63daf-8483-4772-8e79-3d69d8477de4	(linux)	guid:309a3e76-270b-41b2-b5d5-ed8154e7542b

cat /proc/partitions

>major	minor 	# blocks	name
>  7	0	7285312	loop0
>179	0	7634944	mmcblk0
>179	1	17	mmcblk0p1
>179	2	512	mmcblk0p2
>179	3	2048	mmcblk0p3
>179	4	2048	mmcblk0p4
>179	5	32768	mmcblk0p5
>179	6	7298560	mmcblk0p6

Hi.
I have Z8102AX V2 with mPCI with 16 Gb emmc.
How can I help toget OWRT working on it ?
As for Nand version OWRT and ROTer works.
Even some customized Keenetic OS.
But not for emmc version.

my model is still unsupported, and I'm not able help either.