All ports were functioning properly yesterday until "rpi-update". Then after reboot, they stopped functioning and red light started blinking. I changed power supply. Red light is stable now but ports are not functioning.What should i do?
I've read something before that newer kernels cause this exact issue. Try reverting back to an old kernel or wiping your card and downloading a fresh, new image. If a new image doesn't work (It should), go for an old one.
Also, something might have messed up the update. Do whatever you can to reconnect the pi to the internet, and run the update again. Wifi should work on one of the ports.