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gcdumptool 1.0.8 released, can now dump Switch Game Cards directly to single or split NSPs

gcdumptool_icon.png

Physical vs Digital? How about both! Thanks to gcdumptool's latest update you can now dump your Nintendo Switch Game Cards directly to NSP with ease, and it also works on FAT32 microSDs!

Before going into the specific details, let's take a step back and explain exactly what it does in case any of you are wondering. gcdumptool is a homebrew application made by @DarkMatterCore which, as the name implies, allows you to dump your physical Switch games to your microSD. The app takes extra care to make a 1:1 copy of your Game Cards and also includes a few functions to verify your dump after it's done, as it can check it against an online database (provided by NSWDB) or show you the file's CRC32 so you'll be able to compare it against a good known one. Up until now the application could only dump games to XCI, aka the Switch's native Game Card format, and users had to convert them manually and externally if they wanted installable NSPs instead. However, starting from version 1.0.8, this is no longer the case!

While this is already good by itself, the real treat is being able to dump cards directly into split NSPs: this will allow easy dumping on FAT32 microSDs as a lot of Switch games are well over 4 GiB in size (thus going over the filesystem's maximum file size)! It doesn't end there, however, as the app will automatically set the directory's archive bit once done to let title installers treat it as a single file, and that means you'll be able to install your game without doing any extra steps. If you want to join your NSP back to a single file anyways you'll be able to do this easily on your PC, as the format is exactly the same as the one used by splitNSP.

sshot1.jpg sshot2.jpg​

There's much more to both gcdumptool and this update itself! You can read the full changelog down below, and you can also learn more about the app's feature set on its official GBAtemp thread.

  • Added proper metadata reading from multigame carts.
  • Added gamecard -> NSP dump option:
    • Compatible with file splitting (for FAT32 support). The same layout from splitNSP.py is used: a directory with numbered part files (00, 01, etc.). The archive bit is enabled right away in this directory to allow HOS to treat it as if it were a whole file. This way, it can be used with any application with NSP-handling capabilities.
    • Compatible with CRC32 checksum calculation. Disclaimer: NSP dumps can't be verified against the XML database.
    • Output NSPs contain a metadata XML file based on the information from the CNMT NCA for the application, which is decrypted using code from hactool. The necessary keyset is loaded from "sdmc:/switch/prod.keys", which can be generated using Lockpick.
    • If a multigame cart is used, you'll be able to choose which application to dump from the menu.
  • Dump verification process tweaked for multigame carts: it'll now look for a possible checksum match using the Title IDs from all bundled applications.
  • Improved error reporting in dumper.c when a write operation fails. Furthermore, if a write error is produced when trying to write data to an offset past the FAT32 file size limit (0xFFFFFFFF bytes), the application will suggest the user to enable the file splitting option.
  • Tweaked part sizes for splitted dumps: XCI/raw partition/manual file dump part size now matches the one used by XCI-Cutter, while the NSP part size matches the one used by splitNSP.py.
  • Minor fixes to the UI code.
Click to expand...

:arrow: Source
:arrow: GBAtemp Official thread
 
Last edited by RattletraPM,
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Jayro

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This is impressive. I'd still like an NSP>XCI converter though, one that doesn't require a computer. Mostly for those digital-only releases so I can play them in SX OS.
 
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Reecey said:
Why is there a picture of Goldleaf running in the background in the img?
Click to expand...
It's the picture of a Switch installing a game (Hyrule Warriors, both box and cart seen on the right) that's just been dumped using gcdumptool (FAT32, Split NSP).

I made a promotion icon out of the pic as a placeholder while writing the article, however @DarkMatterCore liked it so I decided to keep it. If you want to see the app in action, screenshots are already included in the article itself (which have been taken from the same Switch) and, in a way, the pic could also be seen as showing the NSP being installed afterwards just fine, so yeah. It's just that :P
 
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RattletraPM said:
It's the picture of a Switch installing a game (Hyrule Warriors, both box and cart seen on the right) that's just been dumped using gcdumptool (FAT32, Split NSP).

I made a promotion icon out of the pic as a placeholder while writing the article, however @DarkMatterCore liked it so I decided to keep it. If you want to see the app in action, screenshots are already included in the article itself and, in a way, the pic could also be seen as showing the NSP being installed afterwards just fine, so yeah. It's just that :P
Click to expand...
Why not instead just show the gcdumptool dumping in the background that makes more sense than showing Goldleaf but if @DarkMatterCore is ok with this than that’s fine with me but tbh it’s nearly as bad as the Mario & Zelda 8.0.1 overclock update news, if you clicked on further discussion it directs you to the system overclocking kip patch thread.
 
Rune

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Jayro said:
This is impressive. I'd still like an NSP>XCI converter though, one that doesn't require a computer. Mostly for those digital-only releases so I can play them in SX OS.
Click to expand...
Use NSC Builder. I've made a few XCIs out of NSPs and all work fine.
 
DarkMatterCore

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Jayro said:
This is impressive. I'd still like an NSP>XCI converter though, one that doesn't require a computer. Mostly for those digital-only releases so I can play them in SX OS.
Click to expand...

Have you tried n1dus?

Reecey said:
Why is there a picture of Goldleaf running in the background in the img?
Click to expand...

Tbh, I didn't even notice that. But I'm not mad about it. :)

The logo used in the header image is actually pretty neat, way better than the icon I'm currently using for the application.

arjunpatel said:
im dumping doom right now it says eta 20h i mean damn lol
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arjunpatel said:
i got a error saying the switch couldnt start doom though it installed fine
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I'd like to address both issues. I'll send you a PM.
 
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DarkMatterCore said:
Have you tried n1dus?



Tbh, I didn't even notice that. But I'm not mad about it. :)

The logo used in the header image is actually pretty neat, way better than the icon I'm currently using for the application.





I'd like to address both issues. I'll send you a PM.
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Yes seams no matter what i dump (currently tried 4 games) they all give wrong completion time of around 20h sure its a misplaced decimal or something stupid works great though so timer isnt a big deal.
 
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Been waiting for this. Thing is though: I'm not sure I understand something. Can I also install these NSPs on a fat32 card? I haven't done the exfat driver workaround and if I don't have to then that would be great.
 
DarkMatterCore

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BossRoss93 said:
Been waiting for this. Thing is though: I'm not sure I understand something. Can I also install these NSPs on a fat32 card? I haven't done the exfat driver workaround and if I don't have to then that would be great.
Click to expand...

You can. I installed my very own Super Mario Odyssey NSP dump just for testing, and it worked.
 

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