The Switch Flashcart Thread (Mig Switch etc.)

[Drakull]

Most games I've tried haven't worked because it requires online, sometime even to load up the game. Is there a fix?

That doesn't mean they don't work... just that you don't want to use the online connection. (big difference).

 

[ColdCola]

Compatibility Issues: MigSwitch-V2 Not Working With “Metroid Prime 4: Beyond”​

I bought an NS1 version of Metroid Prime 4: Beyond and dumped it using the latest nxdumptool-rewrite. I placed the 5 dumped files into my MigSwitch-V2 and plugged it into my Switch, but it always fails to load.
The system shows:

“The gamecard could not be read.”

I’ve run many experiments, and at this point I strongly believe the issue is related to MigSwitch-V2.

My Environment​

• NS1 updated to 21.0.1
• Created emuNAND
• Latest Atmosphère
• Other games run perfectly in emu environment
• Keys dumped via Lockpick_RCM (required by nxdumptool-rewrite)

Experiments Conducted​

1. Dumping comparison
   I dumped Metroid Prime 4: Beyond with both nxdumptool-rewrite and MigDumpTool.
   → Compared the 5 dumped files using md5sum — they are identical.
2. Installing the dump
   Installed the dumped XCI using dbi.nro — installation succeeded, and the game runs normally.
3. Using MigSwitch-V2
   When the 5 “Metroid Prime 4: Beyond” files are on the MigSwitch card,
   
   • NS1 cannot read the gamecard
   • NS2 cannot read the gamecard
     → Both show: “The gamecard could not be read.”
4. Other games work fine
   All my other dumped games load correctly on MigSwitch-V2 — except the newly released Metroid Prime 4: Beyond.

Conclusion​

Based on all my tests, I’m quite certain this is a compatibility issue with MigSwitch-V2

Has anyone else encountered the same issue?
Is there currently any method or workaround to solve it?

 

[dolpf]

Has anyone else encountered the same issue?

Everyone has. This is the third day this has been discussed.

Is there currently any method or workaround to solve it?

No. Wait for the new firmware for MIG.

 

[impeeza]

Everyone has. This is the third day this has been discussed.


No. Wait for the new firmware for MIG.

So the ninjas already know how to detect a MIG card!?

 

[dolpf]

So the ninjas already know how to detect a MIG card!?

A new wave is quite possible.
I wouldn't be surprised if those who tried to run this dump get banned.
Mig Team loves "playing ping pong" with Nintendo, and Nintendo loves it even more.

 

[jrgbat]

That doesn't mean they don't work... just that you don't want to use the online connection. (big difference).

When I want to do local coop, some games require an internet connection or an update to work but I have airplane mode on.

 

[Drakull]

When I want to do local coop, some games require an internet connection or an update to work but I have airplane mode on.

Again... there is a huge difference between "doesn't work" and "requires internet connection or an update that I can't provide in airplane mode", and saying that doesn't work because "requires connection" is misleading: You would have the same issue with an original cartridge (which obviously doesn't mean the original cartridge doesn't work).
Your issue is you try to use copies from the internet instead of your own... so here lies the "problem".
You can update the games from a different console (without connecting to the internet) using the local connection... and the internet connection games (if it's required to play and you can only play on "airplane mode"... why you even try those? ".

 

[Matt1984]

A new wave is quite possible.
I wouldn't be surprised if those who tried to run this dump get banned.
Mig Team loves "playing ping pong" with Nintendo, and Nintendo loves it even more.

That is why I try new games on the Mig Switch on my modded switch under eMMC first. That doesn't go anywhere near the internet.

 

[dolpf]

That is why I try new games on the Mig Switch on my modded switch under eMMC first. That doesn't go anywhere near the internet.

This is a good way, but most of those who use Mig do not have a hacked switch.

 

[Drakull]

On the positive side: the migflash team is already aware of the issue and they are working on it. (that will be a new firmware release when it's ready).

 

[Temp1029]

On the positive side: the migflash team is already aware of the issue and they are working on it. (that will be a new firmware release when it's ready).

How do you know?

 

[Drakull]

How do you know?

Well... something quite simple... I found their e-mail address, sent then an email, and they answered to it.
The "old way" of asking and getting a reply.

Post automatically merged: Dec 10, 2025

In fact..

Post automatically merged: Dec 10, 2025

I just tried and the dump is now working... still issues with Salty if you have it active (same as with the original cartridge).

 

[protivakid]

FYI to anyone, there's a new v1.2.3 firmware out on their migflash site and only after updating was my backup of Metroid Prime 4 properly detected.

Edit see above post which beat me to the info

 

[Drakull]

FYI to anyone, there's a new v1.2.3 firmware out on their migflash site and only after updating was my backup of Metroid Prime 4 properly detected.

Edit see above post which beat me to the info

Not a competition, plus is always good to have more than one person checking.

 

[Temp1029]

just need to find somewhere to dload mp4 in xci with all the certificates etc now.

let the hunt begin

 

[Drakull]

just need to find somewhere to dload mp4 in xci with all the certificates etc now.

let the hunt begin

You mean you are not going to use it with your own backup? ....
Grandma N8**do might do this to you...

 

[Matt1984]

I used the contact form on the mig flash site using my phone with ad block disabled and I was able to send them a message. That was a few days ago. If I try via a desktop browser it would fail.

Post automatically merged: Dec 11, 2025

Tested out the update on the mig dumper and cart and it is working

 

[shinwg]

Sorry to ask, I couldn't find answer. This card only work with your legit game dumps? Or can download games work also

 

[BigOnYa]

Sorry to ask, I couldn't find answer. This card only work with your legit game dumps? Or can download games work also

It will work with shared dumps found online, but it will get your Switch banned by playing those shared dumps.

 

[impeeza]

This card only work with your legit game dumps? Or can download games work also

Not «ONLY» will work with non-legit but you will be banned.