ROM Hack GB/GBC VC Sav --> PC Emulator and back

julian2908 · May 6, 2018

Hello, i have a question.

There are many gb/gbc games they need a second game to trade things (game watch gallery 2 the last games in the museum from the game watch gallery 1). You can´t complete 100% a game if you make the gb /gbc roms to cias and play this on the 3DS. My idea was to backup the save from the gb gbc VC, copy to the pc and play with the emulator the things that i miss. After this i take the save file, change the name and bring back the save to the 3ds and import the save. The first to step are working. After i bring back the save file and import the save file nothing change...

Sorry for my bad english i hope you can understand me.

ThoD · May 6, 2018

Did you make sure to rename the saves to .dat file extension first of all? Also, what are you using to backup/restore the saves (eg: JKSM)? Finally, make sure they are in the correct directories and that the emulator saving settings aren't changing the save type from that of the 3DS's Virtual Console.

julian2908 · May 6, 2018

ThoD said:
Did you make sure to rename the saves to .dat file extension first of all? Also, what are you using to backup/restore the saves (eg: JKSM)? Finally, make sure they are in the correct directories and that the emulator saving settings aren't changing the save type from that of the 3DS's Virtual Console.

Yes. After i played the game on the emulator i rename it to save.dat and bring back to the same direction i got it. Yes, i use JKSM. Okay how can i make it that the emulator don´t change the save type ?

ThoD · May 6, 2018

julian2908 said:
Yes. After i played the game on the emulator i rename it to save.dat and bring back to the same direction i got it. Yes, i use JKSM. Okay how can i make it that the emulator don´t change the save type ?

Simply go to wherever the options are for whatever emulator you are using and switch the save type and save size to automatic, that way it will retain them instead of forcibly changing them. Automatic makes existing saves to remain the same type and size, while for new ones it uses the suggested save type and size for each game (basically what games normally keep their saves as).

julian2908 · May 6, 2018

ThoD said:
Simply go to wherever the options are for whatever emulator you are using and switch the save type and save size to automatic, that way it will retain them instead of forcibly changing them. Automatic makes existing saves to remain the same type and size, while for new ones it uses the suggested save type and size for each game (basically what games normally keep their saves as).

Okay i don´t find it. I use the VBA-M and the one and only thing i found was save type and that is on automatic

ThoD · May 6, 2018

julian2908 said:
Okay i don´t find it. I use the VBA-M and the one and only thing i found was save type and that is on automatic

VBA should have the save size exactly under that, set it to 64KBs. Besides that, I don't know why it's not working for you. Unless you can check with a hex editor that the emulator doesn't add/remove the last 8 bytes from the save, that's the only thing you can do for now to hopefully get results.

julian2908 · May 6, 2018

ThoD said:
VBA should have the save size exactly under that, set it to 64KBs. Besides that, I don't know why it's not working for you. Unless you can check with a hex editor that the emulator doesn't add/remove the last 8 bytes from the save, that's the only thing you can do for now to hopefully get results.

Ok i tested with 64KBs and don´t work -.- i can´t use a hex editor i don´t know how a hex editor works :S

ThoD · May 6, 2018

julian2908 said:
Ok i tested with 64KBs and don´t work -.- i can´t use a hex editor i don´t know how a hex editor works :S

You don't need to know how it works, only to check and see if the emulator adds/removes any bytes at the very end. If it adds, delete them, if it removes, add them (all as "00").

julian2908 · May 6, 2018

ThoD said:
You don't need to know how it works, only to check and see if the emulator adds/removes any bytes at the very end. If it adds, delete them, if it removes, add them (all as "00").

ah okay i try it tomorrow

tahnks for your help

julian2908 · May 7, 2018

julian2908 said:
ah okay i try it tomorrow tahnks for your help

Okay i tested. Here is the first sav i get after backup the gameboy vc game (game watch gallery)
https://gyazo.com/acaf95d27a6b67b38a808f03a765db7e
https://gyazo.com/e530bc0f3135f25b6159357e0832c87f

I put this sav in the emulator direction with the rom, change the name to Game & Watch Gallery (Europe).sav and played the game (first game, score from 6 to 8)
After this i rename this to sav.dat (i wrote sava.dat becauso not to confuse with the first sav.dat, i made a copy of the first sav.dat)

https://gyazo.com/8b78667a248b53beec546330afaac4d9
https://gyazo.com/c7c6a52094de71346e120fb441171126

nothing changed.. i put the sav.dat back to my 3DS and import with the backup program in my game back. Nothing changed. my score is 6

EDIT: If i use the new sav.dat back to my emulator, the score is 8.

ThoD · May 7, 2018

julian2908 said:
Okay i tested. Here is the first sav i get after backup the gameboy vc game (game watch gallery)
https://gyazo.com/acaf95d27a6b67b38a808f03a765db7e
https://gyazo.com/e530bc0f3135f25b6159357e0832c87f

I put this sav in the emulator direction with the rom, change the name to Game & Watch Gallery (Europe).sav and played the game (first game, score from 6 to 8)
After this i rename this to sav.dat (i wrote sava.dat becauso not to confuse with the first sav.dat, i made a copy of the first sav.dat)

https://gyazo.com/8b78667a248b53beec546330afaac4d9
https://gyazo.com/c7c6a52094de71346e120fb441171126

nothing changed.. i put the sav.dat back to my 3DS and import with the backup program in my game back. Nothing changed. my score is 6

EDIT: If i use the new sav.dat back to my emulator, the score is 8.

Try using the computer version of VBA, that's all I can think of. It may be the mobile version does something to the saves. Tried for the exact same game you mentioned on PC and it works without any issues

julian2908 · May 7, 2018

ThoD said:
Try using the computer version of VBA, that's all I can think of. It may be the mobile version does something to the saves. Tried for the exact same game you mentioned on PC and it works without any issues

i tested with the pc version

Feroz El Mejor · May 8, 2020

I'm here for the same question, I'm sorry if there's another thread about this solving it, if it exists, I couldn't find it and I would like to know how to do this.

I want to inject saves from my GB/GBC games into my 3DS, I know how to do it with the main series of Pokémon, but the others didn't work for me.

Thank you for any help!

slimbizzy · May 8, 2020

Feroz El Mejor said:
I'm here for the same question, I'm sorry if there's another thread about this solving it, if it exists, I couldn't find it and I would like to know how to do this.

I want to inject saves from my GB/GBC games into my 3DS, I know how to do it with the main series of Pokémon, but the others didn't work for me.

Thank you for any help!

What program/utility were you using to inject saves? Sometimes what I do is use more than one program. It boosts the compatibility rating up much higher.

Feroz El Mejor · May 9, 2020

TomRannd said:
What program/utility were you using to inject saves? Sometimes what I do is use more than one program. It boosts the compatibility rating up much higher.

I use JKSV, but my problem is that I want for example use my Hamtaro Ham Hams United save into my 3DS VC rom but it doesn't work.

slimbizzy · May 9, 2020

Feroz El Mejor said:
I use JKSV, but my problem is that I want for example use my Hamtaro Ham Hams United save into my 3DS VC rom but it doesn't work.

Do you have access to a computer? Sometimes, it is better to use desktop programs, instead of JKSV.

Feroz El Mejor · May 9, 2020

TomRannd said:
Do you have access to a computer? Sometimes, it is better to use desktop programs, instead of JKSV.

Yes, and I have put my save into the extracted save from the 3DS, but it doesn't read it, I don't know how it works, it's not that I don't understand how to extract or inject the saves, it's more that I don't know how to make it work, if you can try with your 3DS to put a VisualBoyAdvance save from any GB/GBC game into the official GB/GBC VC 3DS emulator, please, tell me how.

slimbizzy · May 9, 2020

Feroz El Mejor said:
Yes, and I have put my save into the extracted save from the 3DS, but it doesn't read it, I don't know how it works, it's not that I don't understand how to extract or inject the saves, it's more that I don't know how to make it work, if you can try with your 3DS to put a VisualBoyAdvance save from any GB/GBC game into the official GB/GBC VC 3DS emulator, please, tell me how.

Yeah dude. I'll give it a shot. Hopefully I can help you out on this one, too.

Feroz El Mejor · May 9, 2020

TomRannd said:
Yeah dude. I'll give it a shot. Hopefully I can help you out on this one, too.

Let me share the saves.

ROM Hack GB/GBC VC Sav --> PC Emulator and back

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