First: if you don't know what you're doing, stay away from PBT. It stands for Perfect Brick Tool.
Anyway, Pokemon X will never work with PBT or Palantine, as it is encrypted with 7.x+ keys.
To make it work you have to (assuming you're still using PBT):
1 - Install DevMenu.
2 - Install a CLEAN, LEGIT CIA for Pokemon X/Y.
3 - Backup your SD card.
4 - Create a Emunand partition on your SD card (use Gateway loader.dat for that).
5 - Before turning 3DS back on, restore backed up content to your SD card.
6 - Install Roxas' RXTools with keys. Make sure EmuNand and Keys signs are both green. Load Emunand from there.
7 - Update Emunand. Be careful, lots of things might update your Sysnand, so make sure you're on Emunand. It is very easy to mess it up.
8 - Now you can play, but only on your Emunand.
To do it on Palantine CFW, you need to setup dual emunand, install it on the Rednand , extract rednand and reinsert it as a normal emunand on partition 1. It is more difficult, but is way safer.
Anyway, Pokemon X will never work with PBT or Palantine, as it is encrypted with 7.x+ keys.
To make it work you have to (assuming you're still using PBT):
1 - Install DevMenu.
2 - Install a CLEAN, LEGIT CIA for Pokemon X/Y.
3 - Backup your SD card.
4 - Create a Emunand partition on your SD card (use Gateway loader.dat for that).
5 - Before turning 3DS back on, restore backed up content to your SD card.
6 - Install Roxas' RXTools with keys. Make sure EmuNand and Keys signs are both green. Load Emunand from there.
7 - Update Emunand. Be careful, lots of things might update your Sysnand, so make sure you're on Emunand. It is very easy to mess it up.
8 - Now you can play, but only on your Emunand.
To do it on Palantine CFW, you need to setup dual emunand, install it on the Rednand , extract rednand and reinsert it as a normal emunand on partition 1. It is more difficult, but is way safer.