The SOM-RK3399 displayed FriendlyElec
(that is the rogo before OS boot like Android
) then nothing happen.
I guess the device couldn't boot. but I didn't find any data to solve the problem for friendlyDesktop OS.
So the way is Bold. just Flash FriendlyDesktop ROM again with AndroidTool_Release_v2.71 or more. that's the way I did.
After that the OS was boot without any problem.
Probably, it started when I changed all the permissions under /etc using chmod -R 777 /etc
.
After that, a number of problems occurred, and the permissions under/ etc were changed many times by chmod
. (I forgot 400 or 555 or 444 or other).
That is very ridiculous.
Probably, in linux, it is highly possible that the startup script is stored under /etc. that is the reason the device couldn't boot I think.