I'm PRETTY sure my microsd in my gateway is not fake, as it already has over half of the 16gb storage filled and hasn't given me a problem, also the game still boots which means it didn't become corrupt. And also also the game says it was last modified in June which was when I downloaded it, suggesting the save is not in the ROM, and I also don't think that saves are on the gateway microsd. I honestly don't know what could have even happened.
Why those don't corrupt? Search for NAND chips, SD/CF storage cards are made of them, but with internal controller..
Storage cards appear to be used as normal block device as what HDD does. However it is in fact not.
If you don't believe me, search for FTL in google. The tech named as the term is the core tech for SSD and Storage cards. Except those are implemented by hardware.
Other part doesn't corrupt doesn't mean that the card is all ok. I've done a total fill and checksum with PC rebooted to check my cards.
To check if the game is Card1 or Card2 is simple. There is tool for that, however i'm using CFW so i don't know much about GW. Help yourself with this.
Still you don't tell me what card you're using. Oh well. Let me think you've totally forget where you get it.
To check out the problem.
* Check those games that this issue related, to know whether it is Card1 or Card2. Write down those names and card1/card2.
- Even i do know most of the games in 3ds/3dz are card1.
* If all be the same, says Card1. Or all the same, that Card2. See this. Please really do it please.
- Card1: Check GW MicroSD, and GW. Card2: Check your SD.
* If not all the same, check your GW first. There is a diagonis mode for it, in the GW menu, isn't it. Try it if your card is legit.
- So please do back your NAND up first before that. It is said to sometimes trigger "BrickWay" if your card is not so legit.
- Cause i don't believe in your SD/CF cards, you should dump the NAND twice - with a reboot needed between the two, to PC, and use Checksum Tools to check it.
Note: Storage cards acts not the actually same as others. And please search for GW official forum, to get more help. This board is more likely to be support of CFWs.
Or else if you don't want to deal with it, and
confirm you SD card must be legit, by a computer tech, or with nerd/hacker tools for it. Yes, at least other one.
Get yourself a CFW. Then all those saves could be in SD card, and you can export those with SaveDataFiler.
And, convert yourself CIAs or get those somewhere. If this issue still appears, it might be not the problem caused by GW and its microSD.
If you want to get a CFW. For me RxTools is plenty stable for O3DS, and i'm very happy with it. For N3DS, get ReiNAND or CakesFW.
Good luck. And if you decided to buy a legit gamecart, you're free to do so. Sorry if this hurts you:
If you still think your card is ok and not accept any of my knowledge, i'm so sorry i can not help you, and please go to GW Official forum instead.