I have spent a considerable amount reading docs and getting my head around building a custom default kernel & desktop image. Patching the kernel and optimising the desktop environment is working well. The remaining question is:

 

How do I select a specific - kernel 4.4.174 (based on armbian-release 5.75) ? It defaults to 4.4.176 and 5.86.

Actually, I have found a similar topic question in the forum.

 

"Add: KERNELBRANCH='tag:v4.14.52' to build/userpatches/lib.config"

 

I will give this one a go.

 

Actually, I have found a similar topic question in the forum.

 

"Add: KERNELBRANCH='tag:v4.14.52' to build/userpatches/lib.config"

 

I will give this one a go.

----------

Looks like this was a red herring. I had a look at the relevant git repo and it reports:

 

root@ubuntu:~/build# git ls-remote -t https://github.com/rockchip-linux/kernel.git
cde3c3fdf278bbf3edc895667a65c0cc16daee0c    refs/tags/release-20161011
028bc40a6d227cb553236588c43f35ad7ae2af97    refs/tags/release-20161015
3e00738277533382e6a17148b80b09a8fabea268    refs/tags/release-20170220
49c16833b723b2c4fd0768483790a4f890cf2e10    refs/tags/release-20170417
3467c559d82943f7339578f92b0817b63b8b7ddc    refs/tags/release-20170705
5ab215ee7f902201d4830b0b9536135143666b42    refs/tags/release-20171015
2801809213b2ebda0ab877ede0354d48fe95cde1    refs/tags/release-20171213

 

So the correct structure should be KERNELBRANCH='tag:release-yyyymmdd'.

 

More on rockwell branches/tags:  https://github.com/rockchip-linux/kernel