I installed TWRP successfully. On my phone i downloaded the SuperSu Zip. When i click install on TWRP it doesnt show up. Can Anyone tell me what to do to make it show up.
-Phone = J7 (2016) j700T
You are probably using the wrong version of TWRP. Many links for the J700T are posted in the forums and it took me a while to get a developer to give me the correct link.
For Twrp, flash TWRP-220.127.116.11-J700T with ODIN. Put SuperSu on the internal SD if you have to, but TWRP should be able to read the external SD.
My source is this thread on XDA Developers. Afterwards, go to page 1 for detailed instructions on installing SuperSu and enabling Data partition backups in TWRP. (Hint: you need to backup your apps with Titanium Backup before formatting your Data!)