Ok So I spent a lot of time yesterday trying to get this to work because there wasn't one main guide that went into detail on how this process worked. Here is a guide with pictures that shows the entire process. I will be using Pokemon X to show this process but it can be done with any of the 4 GenIV games.
Things You will need:
Windows Computer
Pokemon XY/ORAS game
Powersaves Device
Gateway Cartridge
Software Needed:
PowerSaves 3DS software
Hex Editor, I prefer HxD
Pokemon GenIV Save Decrypter
PKHex
ChecksumFixer
SaveDataFiler (Google is your friend)
The Process:
1. Make A Backup of your Pokemon game through the Powersaves Software
2. Locate the Backed up file and Copy it to a different Folder. It should be in C:\Users\{user}\Powersaves3DS
3. Make a Copy Of the save so we can restore it back to the card later.
4. Open the file that is not a copy in HxD and replace Everything from 90x9C to the end with FF by selecting it all and using Fill Selection under the Edit menu. Then hit Save.
5. Use Datel Checksum Fixer on the Edited Save.
6. Copy the Fixed Save File Back to the PowerSaves Folder and then removed the " - [Fixed]" from it. Then open back up Powersaves and Restore the Save File to your Pokemon Card.
7. Put the Cartridge Into a 3ds that has a 9.0-9.2 SysNand and Run the game. You only need to run the game and get to the Language Selection Screen on XY/ORAS then hit the Home Button and close the game.
8. Put the game Cartridge back into the Powersaves Adapter and Run the Item Slot 1 x999 code on the cartridge.
9. Remove the card from the Adapter and then put it back in. Then Make a backup of the save that is currently on the card Name it save1Keystream.
10. Go into the powersaves folder and copy the save1keystream backup to your decryption folder.
11. Open the PokemonSaveDecrypter select whether you are decrypting XY or ORAS and in the first box select the save1keystream backup we made and in the second select the Copy of the Save for Gateway that still contains our legit save. Hit Decrypt Save and save the decrypted save into our Decryption Folder.
12. Open the decrypted save in PKHex. If Everything went well your decrypted save should open without any errors.
13. If your save opens in PKHEX then you should be all good to import it into a .3ds or a .cia using savedatafiler. Make sure when you do, you import the save and also delete the securekey so that the game will recognize the new save file.
If you have any questions feel free to post them below or shoot me a PM.
Things You will need:
Windows Computer
Pokemon XY/ORAS game
Powersaves Device
Gateway Cartridge
Software Needed:
PowerSaves 3DS software
Hex Editor, I prefer HxD
Pokemon GenIV Save Decrypter
PKHex
ChecksumFixer
SaveDataFiler (Google is your friend)
The Process:
1. Make A Backup of your Pokemon game through the Powersaves Software


2. Locate the Backed up file and Copy it to a different Folder. It should be in C:\Users\{user}\Powersaves3DS


3. Make a Copy Of the save so we can restore it back to the card later.

4. Open the file that is not a copy in HxD and replace Everything from 90x9C to the end with FF by selecting it all and using Fill Selection under the Edit menu. Then hit Save.


5. Use Datel Checksum Fixer on the Edited Save.

6. Copy the Fixed Save File Back to the PowerSaves Folder and then removed the " - [Fixed]" from it. Then open back up Powersaves and Restore the Save File to your Pokemon Card.

7. Put the Cartridge Into a 3ds that has a 9.0-9.2 SysNand and Run the game. You only need to run the game and get to the Language Selection Screen on XY/ORAS then hit the Home Button and close the game.

8. Put the game Cartridge back into the Powersaves Adapter and Run the Item Slot 1 x999 code on the cartridge.

9. Remove the card from the Adapter and then put it back in. Then Make a backup of the save that is currently on the card Name it save1Keystream.

10. Go into the powersaves folder and copy the save1keystream backup to your decryption folder.

11. Open the PokemonSaveDecrypter select whether you are decrypting XY or ORAS and in the first box select the save1keystream backup we made and in the second select the Copy of the Save for Gateway that still contains our legit save. Hit Decrypt Save and save the decrypted save into our Decryption Folder.


12. Open the decrypted save in PKHex. If Everything went well your decrypted save should open without any errors.

13. If your save opens in PKHEX then you should be all good to import it into a .3ds or a .cia using savedatafiler. Make sure when you do, you import the save and also delete the securekey so that the game will recognize the new save file.
If you have any questions feel free to post them below or shoot me a PM.