I did that. I’m able to mount CE on a Mac OS and change config.ini to 50Hz.
Strange thing is when the Odroid N2 Boots up the CE Logo for a split second pops up with a refresh rate change to 60Hz and then another refresh rate change CE Logo 50Hz with the normal version notification in top left of screen showing and then a momentary loss of connection until refresh rate 50Hz with the skin home screen appearing.
I can see in dispinfo that i have correctly changed to 50Hz.
hmm, maybe its N2 specific, maybe its normal behauviour. Honestly, I am aware that during bootup there are a few disp switches, but never much care about this, as my boxes runing 24/7, and menu is rendered 23.976 (another switch) anyway… So I leave 50/60 defaults due to TV compatibility reasons…
Hopefully devs could comment boot behauviour.
P.S.: Only thing I know about, is that first logo and second logo goes from different locations. The first one is I think tar/gzipped on /flash, the second one is oemsplash.png. Not sure if their switch is accompanied by refresh rate switch also or not.