Our Khadas Docs have been upgraded and the new version of the docs is pushed out now. 
If community users have any ideas, welcome to discuss here. 
Ps: Some documentation links in the forum may be invalid. If you encounter invalid documentation links, you can @ Khadas users in the community.
Wiki style looks nice, any particular reason to update over old wiki ?
The info using dpkg -i to install the kernel is missing. The instructions in the old docs had a typo so it did not work unless it was changed.
looks good, I did notice that one of the cad drawings found @ /products/vim4/cad vim4_m2x_wwan_pcba_3d_v12_220427.stp
is maybe of the v1 version of the expansion card? Is there an updated drawing with the m2/4g module attached?
To me it looks like the original information about STA/AP mode for the VIM4 is missing. It was available at VIM4 Wi-Fi STA/AP Mode [Khadas Docs] Where is it now?
Please check here:
http://docs.khadas.com/products/sbc/vim4/configurations/upgrade-linux-kernel
Maybe you can try the instructions from VIM3?
http://docs.khadas.com/products/sbc/vim3/applications/wifi-sta-ap-mode
