As far as I'm aware, you can delete the nyx bin file in the bootloader folder and that will give u the previous hardware button interface. I haven't updated hekate yet, so I'm not 100% sure of the filename, but I definitely saw this mentioned in a thread on this forum somewhere.
Can nyx.bin safely be removed? I mean i like the new ui. But the old one is cool too.Yea its nyx.bin bootloader/sys/nyx.bin. Remove this and it will go back to text gui