flashtool invalid bundle error

Im trying to downgrade myxperia z2 d6503 mm 6.0.1 firmware to LP so I can root. I have followed a few guides so far and I get the same error when trying to flash LP firmware in flashtool

"17/058/2016 13:58:11 - ERROR - root : this bundle is not valid
17/058/2016 13:58:13 - INFO - Connected device : Sony Xperia Z2
17/058/2016 13:58:13 - INFO - Installed version of busybox : N/A
17/058/2016 13:58:13 - INFO - Android version : 6.0.1 / kernel version : 3.4.0-perf-g43ea728 / Build number : 23.5.A.0.575
17/058/2016 13:58:39 - ERROR -
17/058/2016 13:58:39 - INFO - Cannot open bundle. Flash operation canceled"

I have followed all the guides in creating the FTF file to flash, tried various versions of flashtool from new to old and all have similar results. I must be doing something wrong but i cant figure it out. Can someone point me in the right direction please!!!

Orzly Web Exclusive Case and Accessory Bundle

I believe it's only for the UK (Due to the currency)

So if you're still looking for cases and what not and are interested Orzly is having a website exclusive sale for cases and accessories for the OnePlus 3. It will be available to ship on July 10th.

Link to bundle



This is what it includes:

• Orzly Multi-Functional Wallet - Protection for your device with a built-in stand and slots for your most used credit/debit or ID cards (original price £14.99)
  


• Orzly-Grip-Pro Case For OnePlus 3 Grey - Utilises 2 separate layers to create a protective but slim-profile protective solution (original price £19.99).
  


• Fusion Bumper Case For OnePlus 3 Black - Fusion Bumper Case protects the back and sides of your phone from accidental bumps, drops, scrapes and day-to-day wear & tear(original price £12.99)
  


• Tempered Glass Screen Protector - Guard your screen against scratches, knocks and impact (original price £14.99)
  


• Stylus Pen (original price £9.99)
  


• Orzly Ring Stand - Silver (original price £7.99)
  


• The Orzly Type-C to USB cable is perfect for not only charging your compatible device, but also allowing for super fast data transfer thanks to 3.0 speed. (original price £14.99)
  


• In car USB charger - Keep your device charged on the move. Connect the USB charger to the cigarrete lighter port in your vehicle (original price £9.99)
  

Price: £34.99