Hello!
I searched info here. and made it boot successfully!
but there is minor issue here
CPU : J3355
Mainboard : ECS APLD-I
RAM : Micron 4gb 1866mhz
HDD : 1tb + 500gb + 4tb(external)
I used jun's 1.04b first booting
And after DSM installing, I mounted synoboot2, swaped extra.lzma and extra2.lzma (extra918plus_v0.13.3)
DSM version is 6.2.3 Update3
It can't decoding HEVC(H265) (10bit, 8bit neither)
my system is J3355 Apollo lake
as far as I know J3355 has HEVC decoding
When It play HEVC video in video station
In quality selection, direct steam can't be enabled
only transcoding can be enabled (high,mid,low)
And It play automatically "high" quality
Here is info (I don't know what you need ,I posted all relevant info as far as I know)
ls /dev/dri
card0 renderD128
cat dmesg |grep i915
[Wed Jun 2 02:08:27 2021] [drm] Finished loading DMC firmware i915/bxt_dmc_ver1_07.bin (v1.7)
[Wed Jun 2 02:08:27 2021] [drm] Initialized i915 1.6.0 20171222 for 0000:00:02.0 on minor 0
[Wed Jun 2 02:08:27 2021] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[Wed Jun 2 03:27:00 2021] [drm] Finished loading DMC firmware i915/bxt_dmc_ver1_07.bin (v1.7)
[Wed Jun 2 03:27:00 2021] [drm] Initialized i915 1.6.0 20171222 for 0000:00:02.0 on minor 0
[Wed Jun 2 03:27:00 2021] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
cat dmesg |grep 0000:00:02
[Wed Jun 2 02:08:06 2021] pci 0000:00:02.0: [8086:5a85] type 00 class 0x030000
[Wed Jun 2 02:08:06 2021] pci 0000:00:02.0: reg 0x10: [mem 0x90000000-0x90ffffff 64bit]
[Wed Jun 2 02:08:06 2021] pci 0000:00:02.0: reg 0x18: [mem 0x80000000-0x8fffffff 64bit pref]
[Wed Jun 2 02:08:06 2021] pci 0000:00:02.0: reg 0x20: [io 0xf000-0xf03f]
[Wed Jun 2 02:08:06 2021] vgaarb: setting as boot device: PCI:0000:00:02.0
[Wed Jun 2 02:08:06 2021] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[Wed Jun 2 02:08:06 2021] vgaarb: bridge control possible 0000:00:02.0
[Wed Jun 2 02:08:06 2021] pci 0000:00:02.0: Video device with shadowed ROM
[Wed Jun 2 02:08:27 2021] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[Wed Jun 2 02:08:27 2021] [drm] Initialized i915 1.6.0 20171222 for 0000:00:02.0 on minor 0
[Wed Jun 2 02:08:27 2021] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[Wed Jun 2 03:26:41 2021] pci 0000:00:02.0: [8086:5a85] type 00 class 0x030000
[Wed Jun 2 03:26:41 2021] pci 0000:00:02.0: reg 0x10: [mem 0x90000000-0x90ffffff 64bit]
[Wed Jun 2 03:26:41 2021] pci 0000:00:02.0: reg 0x18: [mem 0x80000000-0x8fffffff 64bit pref]
[Wed Jun 2 03:26:41 2021] pci 0000:00:02.0: reg 0x20: [io 0xf000-0xf03f]
[Wed Jun 2 03:26:41 2021] vgaarb: setting as boot device: PCI:0000:00:02.0
[Wed Jun 2 03:26:41 2021] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[Wed Jun 2 03:26:41 2021] vgaarb: bridge control possible 0000:00:02.0
[Wed Jun 2 03:26:41 2021] pci 0000:00:02.0: Video device with shadowed ROM
[Wed Jun 2 03:27:00 2021] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[Wed Jun 2 03:27:00 2021] [drm] Initialized i915 1.6.0 20171222 for 0000:00:02.0 on minor 0
[Wed Jun 2 03:27:00 2021] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
cat /usr/syno/etc/codec/activation.conf
{"success":true,"activated_codec":["h264_enc","h264_dec","hevc_dec","aac_dec","aac_enc","ac3_dec","mpeg4part2_dec","vc1_dec","vc1_enc"],"token":"2fc861ab16ec8c30ccdd104e9338f88e"}
lspci -k
0000:00:00.0 Class 0600: Device 8086:5af0 (rev 0b)
Subsystem: Device 1019:9ce6
0000:00:02.0 Class 0300: Device 8086:5a85 (rev 0b)
Subsystem: Device 1019:9ce6
Kernel driver in use: i915
0000:00:0f.0 Class 0780: Device 8086:5a9a (rev 0b)
Subsystem: Device 1019:9ce6
0000:00:12.0 Class 0106: Device 8086:5ae3 (rev 0b)
Subsystem: Device 1019:9ce6
Kernel driver in use: ahci
0000:00:13.0 Class 0604: Device 8086:5ad9 (rev fb)
Kernel driver in use: pcieport
0000:00:15.0 Class 0c03: Device 8086:5aa8 (rev 0b)
Subsystem: Device 1019:9ce6
Kernel driver in use: xhci_hcd
0000:00:1f.0 Class 0601: Device 8086:5ae8 (rev 0b)
Subsystem: Device 1019:9ce6
0000:00:1f.1 Class 0c05: Device 8086:5ad4 (rev 0b)
Subsystem: Device 1019:9ce6
Kernel driver in use: i801_smbus
0000:01:00.0 Class 0200: Device 10ec:8168 (rev 15)
Subsystem: Device 1019:8117
Kernel driver in use: r8168
0001:00:12.0 Class 0000: Device 8086:5ae3 (rev ff)
0001:00:13.0 Class 0000: Device 8086:5ad8 (rev ff)
0001:00:14.0 Class 0000: Device 8086:5ad6 (rev ff)
0001:00:15.0 Class 0000: Device 8086:5aa8 (rev ff)
0001:00:16.0 Class 0000: Device 8086:5aac (rev ff)
0001:00:18.0 Class 0000: Device 8086:5abc (rev ff)
0001:00:19.2 Class 0000: Device 8086:5ac6 (rev ff)
0001:00:1f.1 Class 0000: Device 8086:5ad4 (rev ff)
0001:01:00.0 Class 0000: Device 1b4b:9215 (rev ff)
0001:02:00.0 Class 0000: Device 8086:1539 (rev ff)
0001:03:00.0 Class 0000: Device 8086:1539 (rev ff)