Hi All and Anyone - please help...

I'm trying to rotate the screen settings by 90 degrees, but following the advice about /boot/config.txt and uEnv.txt with the correctly applied (with root and vi) I cannot enable my PI to rotate/pivot to 90 degrees.

Have been into raspi-config and hunted around but no luck.

HDMI
BananaPI running Raspbian 14.12 (http://forum.lemaker.org/article-17-1.html)
No response on the lemaker website in a week or so...

Any advice?