this how i rooted and installed TWRP Recovery on my oukitel u7 pro .
All credit to someone posted the recovery image at Russian website can not remember his nick and to some other guy at Mexican website i only put the files together and made demo video at YouTube.
all the files to root and install the recovery in the download link below .
1- download the files
2-unrar it , move the update.zip file from the root folder to your sd card .
3-make sure u have the mtk drivers installed .. ( included in the archive file )
4-open and run the SP flashing tool
5-hit browse and locate the scatter file
7-remove the phone battery and put back in then plug in the usb cable and wait for the pc to detect your phone and start flashing the recovery image .
8-when done . do not turn the phone on we need to go to the recovery first.
9-Press and hold volume up then power to go to the recovery
10-once on the recovery page go to install and locate the update.zip file and install it .
reboot the phone when done .
YouTube tutorial link.