We can't do that using a save manager app?If you're talking about editing a save game, that depends.
If you want to run an exploit from a digital title, easier said than done due to how you need to first decrypt the save before you can modify it, and then encrypt it. This process requires an entrypoint all its own.
If you want to run an exploit from a game cartridge, this is easier to do because there's no console-specific save encryption to worry about, but you need some sort of tool to load the exploited game save onto the cartridge like a save dongle or another exploited system.
Like JK's Save Manager? Yes, but once you're there you've already got an entry point.We can't do that using a save manager app?
What if i want to turn a random 3ds game cart into an entry point to use with other 3ds consoles?Like JK's Save Manager? Yes, but once you're there you've already got an entry point.
find an exploit in the game first. easier said than done.What if i want to turn a random 3ds game cart into an entry point to use with other 3ds consoles?
Bullshit. The ROM would just fail the signature check if it was modified.U can get a ROM, edit the ROM to creat a custom entry point, then build a CTR game card with that ROM, but this is quite expensive and needs a lots of hardware, software and knowledge.