Hacking How to transfer streetpass data

[Nai]

Hi everyone!
I'm giving away my O3DS and I'd like to transfer the Mii Plaza data to my Jap O3DSXL (I recently changed region to EU).
There are other threads talking about this, but they're mostly from 2014/2015 so I wonder if there's a simpler way to do that now.
Thanks for your help...you might need extra patience with me since I'm fairly new to the 3ds hacking world.

 

[Quantumcat]

It may not be possible, since you can't system transfer region changed consoles. You may be able to back up the save data with JKSM and restore it on the other console. What did the older guides say?

 

[E1ite007]

Maybe a little old, but I think that Streetpass data for almost all games is saved as Extdata.
Maybe, you could restore the old Extdata with JKSM (cannot link it, I'm in a phone, sorry) to the new console.