Rooting Sfdroid

Start Sfdroid and open settings.
Tap on about phone and look for the build number. Tap the build number 7 times, after a few taps you'll get a counter which tells you how many taps are left until the developer options are activated.

Enter the developer options and enable root for apps.

Restart the phone into recovery and flash SuperSU 2.52, newer versions did not work.

I have uploaded it here: https://www.dropbox.com/s/q7h2f8v92d...v2.52.zip?dl=0

Reboot the phone and enjoy root in Sfdroid.

I've tested this version with Multirom, but it should also works with a normal installation.