Hardware Can Powersaves really brick a game? How?

[Ichigo1000]

I heard from some people that their powersaves bricked their game, and said that even restoring from a backup does not solve the problem.

1. How does this happen?
2. And if it were to happen, how can you unbrick the game?
3. Is this still happening?
4. Can this happen if you are only using it to backup saves?

 

[osm70]

I am not sure about 3DS, but the DS version of Animal Crossing won't boot if you have corrupted save data. You can repair it by deleting save file (dongle, etc.).

 

[Ichigo1000]

I am not sure about 3DS, but the DS version of Animal Crossing won't boot if you have corrupted save data. You can repair it by deleting save file (dongle, etc.).

I heard that people who brick the game doesnt show up on 3ds menu. So i'm not sure if thats the problem.

 

[Player615]

Active one cheat code or more then apply,when the icone say [[don't remove your cardgame]] if you remove it from the camputer your cardgame brock,
Only ,restore backup can do.

 

[Duo8]

It was certain games that use CARD2 card type that could be bricked.
Powersaves write to the wrong address, overwriting the ROM data in the NAND chip and bricks it.

 

[Julizi]

It was certain games that use CARD2 card type that could be bricked.

Which games are CARD2-games? Is there a list?

 

[Duo8]

Which games are CARD2-games? Is there a list?

ACNL, Pokemon games. Maybe more.

 

[Arras]

It was certain games that use CARD2 card type that could be bricked.
Powersaves write to the wrong address, overwriting the ROM data in the NAND chip and bricks it.

If it can write to the ROM data, what's preventing someone from writing the ROM back?

 

[Julizi]

If it can write to the ROM data, what's preventing someone from writing the ROM back?

That was my first thought but I think that the Datel Software does not allow to do so.