Epilogue.
That was a very interesting road I went during this project implementation and I want to say a big thank you to Khadas team helping me with some questions - @Frank , @hyphop thank you for answers I had during this project. Special thanks goes to @sunny - it was mission impossible to have VIM3 shipped to me, and honestly I doubted it will reach me, but you went absolutely beyond all expectations to sort out all issues for the VIM3 shipping!
And of course, biggest credits goes to my family for their support and patience 