Problem: I can’t seem to install the Jaguar Land Rover JLR-SDD. Every time I try it tells me that JLR SDD is not installed / JLR Pathfinder is not installed. Can you please help me or tell me what I’m doing wrong.

Engineer solution: 

You need to reinstall the JLR SDD software, and then install the driver software.

SDD V160 download:
http://diagnosticdelivery.jlrext.com/idscentral
No password

SDD Patch download:
https://mega.nz/#F!zBpSFarJ!phCGoR3RGYqOHYQa9kVBIw
No password

VXDIAG VCX Nano for Jaguar Landrover USB Version, VXDIAG VCX Nano for Jaguar Landrover Wifi Version : Confirmed working fine

JLR Mangoose Pro cable: Confirmed working fine