ROM Hack RELEASE MHGU Save Editor

[Entoptical]

I updated Dawnshifter's MHXX save editor code to load MHGU save files. All I did was update filesize to match MHGU size instead of MHXX. Tested some item box save edits and it worked fine. Use at your own risk and backup saves!

If you don't want my exe you can compile Dawnshifter's code with my forked filesize edit below

changed code is-
MHXXSwitchSaveEditor/MHXXSaveEditor/Forms/MainForm.cs
Line 32; readonly int SWITCH_SAVE_SIZE = 4726152 + 432948;

https://github.com/Dawnshifter/MHXXSwitchSaveEditor

Update since everyone is asking
At this time you can convert your MHG and MHX saves:
1. MHG -> MHX (via 3ds .cia MHX Data Manager, I suggest moving to Character Slot 1)
Get cia or homebrew .3dsx file here
Yes, you need a hacked/homebrewed 3ds.

2. Import MHX save to MHXX on 3ds via game
You need MHXX (game or cia) on your 3ds. Open the game and import your MHX save.

3. Export MHXX 3ds save file using JKSM or other save data tool.
JKSM found here
Choose to export ExtData for MHXX

4. Open the MHGU Save Editor I posted here, and convert the "system" file you just exported to Switch (click okay for errors or re-open exe if it wont load save)
Load your 3ds MHXX save file, select convert at the top then To Switch.

5. Import the new "system" file to your Switch using Checkpoint or other save data tool.
Checkpoint .nro file can be found here
Yes, you need to have homebrew running on your Switch


Attached my MHG converted save, it lets you import as new save (edit name, etc.)

MHXX/MHX saves may have extra data and cannot be imported as-is (try deleting special items if you can)

For help with Talisman editing (game and app blocks fakes)
my post in this thread

 

[wintermute808]

Amazing. In theory, this could be used to make a an identical copy of a 3ds save from MH Gen. Could be very handy in the absence of a save converter. Great stuff.

 

[johnny1233465487]

Can someone make an .itemXX with every single item please or does somebody have one already? Alternatively, are we able to add "Unlock all craftable armorer" in the editor?

 

[xXMafraXx]

Can someone make an .itemXX with every single item please or does somebody have one already? Alternatively, are we able to add "Unlock all craftable armorer" in the editor?

Got this one, doesn't have all the items but it has quite a lot.

 

[Celediel]

I edited MainForm.cs and it works great. Thanks for the tip!

 

[GnK23]

I was trying to convert my MHG save to MHGU. I hope this gets updated to support 3ds save. I also tried converting my save from MHG - MHX then MHX- MHXX (3ds).
I tried dawn's converter to move the MHXX (3ds) to switch ver (MHGU) but no success.

I tried using this but got an error on loading by backup save MHG (3ds). It said my save is invalid. I also tried using MHX and MHXX (3ds) save on this but got an error. Please enable 3ds support. Thank you for putting effort in updating the program.

Note: My Switch is banned so I cannot do the normal transfer of save

 

[wintermute808]

I was trying to convert my MHG save to MHGU. I hope this gets updated to support 3ds save. I also tried converting my save from MHG - MHX then MHX- MHXX (3ds).
I tried dawn's converter to move the MHXX (3ds) to switch ver (MHGU) but no success.

I tried using this but got an error on loading by backup save MHG (3ds). It said my save is invalid. I also tried using MHX and MHXX (3ds) save on this but got an error. Please enable 3ds support. Thank you for putting effort in updating the program.

Note: My Switch is banned so I cannot do the normal transfer of save

I ran into the same issue. I believe 3ds saves of MHG are a different file size than this can import.

--------------------- MERGED ---------------------------

The line

if (saveFileRaw.Length == 4726152)
{
MessageBox.Show($"Detected a 3DS save", "3DS");
toSwitchToolStripMenuItem.Enabled = true;
switchMode = false;

would need to be changed to

if (saveFileRaw.Length == 4000815)
{
MessageBox.Show($"Detected a 3DS save", "3DS");
toSwitchToolStripMenuItem.Enabled = true;
switchMode = false;


in order for the tool to read a 3ds save from MH gen and count it as legit. Unless I am mistaken. I don't have a compiler and I haven't coded in ages so I could be super wrong.

 

[yohuchiha]

Great!
My Switch file is loading but 3ds file is not loading.

My files:
https://gbatemp.net/threads/request...-3ds-to-switch-converter.515316/#post-8223698
Do you know why ?

 

[wintermute808]

Well my idea worked, sort of. I was able to get the file to compile and accept my 3ds MHGen save file using the edit I suggested, but it throws an out of range exception and breaks.

 

[yohuchiha]

Well my idea worked, sort of. I was able to get the file to compile and accept my 3ds MHGen save file using the edit I suggested, but it throws an out of range exception and breaks.

Same here.
I tried the MHXX (3ds) and it works.
Conversion for MHG (3ds) it is not working.

 

[Raymondtankw]

I updated Dawnshifter's MHXX save editor code to load MHGU save files. All I did was update filesize to match MHGU size instead of MHXX. Tested some item box save edits and it worked fine. Use at your own risk and backup saves!

If you don't want my exe you can compile Dawnshifter's code with my forked filesize edit below

changed code is-
MHXXSwitchSaveEditor/MHXXSaveEditor/Forms/MainForm.cs
Line 32; readonly int SWITCH_SAVE_SIZE = 4726152 + 432948;

https://github.com/Dawnshifter/MHXXSwitchSaveEditor

Sorry if I am slow, but does this mean I can convert the Switch MHXX saved file to Switch MHGenU saved file and retain all my progress from many hours of playing MHXX on switch?
I dont have a 3ds.
Kindly advice.

 

[Entoptical]

I was trying to convert my MHG save to MHGU. I hope this gets updated to support 3ds save. I also tried converting my save from MHG - MHX then MHX- MHXX (3ds).
I tried dawn's converter to move the MHXX (3ds) to switch ver (MHGU) but no success.

I tried using this but got an error on loading by backup save MHG (3ds). It said my save is invalid. I also tried using MHX and MHXX (3ds) save on this but got an error. Please enable 3ds support. Thank you for putting effort in updating the program.

Note: My Switch is banned so I cannot do the normal transfer of save

can you post your MHG save?

--------------------- MERGED ---------------------------

Sorry if I am slow, but does this mean I can convert the Switch MHXX saved file to Switch MHGenU saved file and retain all my progress from many hours of playing MHXX on switch?
I dont have a 3ds.
Kindly advice.

i tried MHXX and got some errors, MHG and MHX without special items works

 

[Diogoudard]

How can I transfer my MHXX save (3DS) to MHGU? Do I have to convert saves?

 

[Entoptical]

I ran into the same issue. I believe 3ds saves of MHG are a different file size than this can import.

--------------------- MERGED ---------------------------

The line

if (saveFileRaw.Length == 4726152)
{
MessageBox.Show($"Detected a 3DS save", "3DS");
toSwitchToolStripMenuItem.Enabled = true;
switchMode = false;

would need to be changed to

if (saveFileRaw.Length == 4000815)
{
MessageBox.Show($"Detected a 3DS save", "3DS");
toSwitchToolStripMenuItem.Enabled = true;
switchMode = false;


in order for the tool to read a 3ds save from MH gen and count it as legit. Unless I am mistaken. I don't have a compiler and I haven't coded in ages so I could be super wrong.

you can convert it using the steps in the original post now if you have a 3ds

--------------------- MERGED ---------------------------

How can I transfer my MHXX save (3DS) to MHGU? Do I have to convert saves?

yeah you can try with the app, it only worked for one of my MHXX saves though

 

[yohuchiha]

How can I transfer my MHXX save (3DS) to MHGU? Do I have to convert saves?

And it's easier to convert your 3DS (XX) to Switch XX and then see some way to convert the XX to GU (Switch)
File size is different, so conversion should be different. (probably would facilitate)

Coming back into my 3DS I started on MHX and then converted to the GEN.
And from GEN I went back to X and upgraded to XX. (I remember a tool that did this)

I believe I made myself understood. (I hope so)

 

[johnny1233465487]

Got this one, doesn't have all the items but it has quite a lot.

Thanks this is great!

 

[doomtrigger]

Can anyone help me figure out what is causing my game to freeze. When i view my equipment box it the game will freeze.

 

[GnK23]

Thank you. Your update works perfectly to convert my save!

 

[rayman13579]

Can I convert my MHXXS save too? or do I have to go MHXXS -> MHXX -> MHGU?

 

[Entoptical]

Can I convert my MHXXS save too? or do I have to go MHXXS -> MHXX -> MHGU?

yeah its worth a try. use the original editor tool to convert to 3ds, then mine to convert to mhgu.

i think until someone figures out how to remove Japanese MHXX event items and quests there may be some errors though