Welcome to CE and your first post.
I’ve edited your post and uploaded your dtb.img instead of link.
Correct category as well.
Can you please tell us which dtb’img you have tried ?
Your hardware specs are required
Ethernet speed and amount of ram.
What happens when you try and boot.
You can’t use the Android dtb
Are these your specs below ???
Processor type: Amlogic S905X2 Cortex A53 quad-core processor at 2 GHz
RAM: 4 GB
ROM: 32 GB / 64 GB
WiFi: 2.4G / 5G dual-band WiFi
Ethernet : 1000 m Standard RJ-45
Use g12a_s905x2_4g_1gbit.dtb and rename it to dtb.img
A member has installed CE on K92