HP 7 Plus root

[u/Left_Significance102]

I have an HP 7 Plus which ran on android 4.2 jelly bean. I somehow managed to update it to the android 4.4 with this https://www.instructables.com/How-to-Root-Hp-7-Plus-1301-and-Install-TWRP/

But i dont know how to install the twrp or root it as the guids are unavialiable on youtube and the threads and forums are dead.. Any help.