How can we use this data on splatoon 3?

In this case we will use the splatfest data to reobtain our tee shirt

1. Download SwitchToolBox
2. Download the Decrypted splatfest data you want to get
3. Extract the SwitchToolBox
4. Open the base.pack of the decrypted data via the ToolBox (located in ToolBox.exe of the extracted asset)
5. Find the textures folder and open it
6. Extract the .bfres.zs file inside it by right clicking it
7. Restart the tool as this file might crash it due to overloading
8. Open the .bfres.zs file you might get an error message of the tool this mean is about to crash
9. Quickly extract the textures folder by right clicking it and export. The tool will crash upon exporting. If it does not close it because it will.
10. Open the tool again and the exported file.
11. You succesfully dumped the textures files just right click the one you want and Export.

Now you can patch the tee shirt texture (NOT TESTED YET BY ME) and have your shirt back.

What is the "decrypted" data mean and how can it be used?

Hey i need help? I wonder how do i import this into my console. I got a MOD that triggers splatoon into thinking its splatfest day 2 but team does not show up! I need help as i tried to use my own data. So how to import the uploaded data back onto a switch thats in here.

Also it would be nice if someone sends screenshots of them actually getting the teams to show up. Because booting into CFW is a heavy backpack everytime as its mostly on normal mode.

-- IDEA SEPARATED FROM QUESTION --
It would be cool too if there is a COMPLETE .nro payload for importing splatfest easily by downloading the folder of the one you want and then selecting it with the tool. Or maybe since the console need internet a way to trick splatoon 3 into its connected and show the collected data happens (which i already got to trick the game via patches but no luck with team names).

Hey if i obtain bcat data by myself. How do i decrypt it??