I try its on my xperia c4 E5333, and some people try its on their xperia c5 and its works too.
First upgrade your device to android 5.1, dont turn on usb debugging. if its on, turn it off
Second download kingroot from here ( .apk) http://www.kingroot.net and install kingroot. then run
So u your device get root now . So easy
after that, if you want to change kingroot to super su, u can folowing this:
download this file http://forum.xda-developers.com/atta...5&d=1432683529 and extract to internal sdcard
install app "Terminal Emulator" from ch play. open it and type "su" for root permission, then type "sh /sdcard/mrw/root.sh", wait...
Reboot your phone, and finaly your phone get root with supersu.
So its a way to root Xperia C4/C5. Can anyone make recovery for C4/C5. Tks alots