I sent a request to update the AML-g12 kernel (5.3.0) for AML images to a network repository.
Pay attention.
This kernel and the following aml-g12 images change the location of DTB files. They are now located at (/boot/dtb/amlogic).
The composition of "deb" packages with the kernel has also changed. I now use one "image" package for all files (the DTB package has been abolished and is no longer used).
For anyone who will update the kernel using the new kernel package, be SURE, after installing the package and BEFORE rebooting, to edit the files (uEnv.ini, extlinux.conf and boot.ini), add the "amlogic" subdirectory to the DTB setup line. The string must look like (/dtb/amlogic/filename.dtb). This information applies to all new images that will be released from now on.