prodinfo_gen

prodinfo_gen is a Nintendo Switch payload that can generate minimal, console-unique, PRODINFO files.

It can either generate one from scratch or import parts of a donor PRODINFO.

It is primarily aimed at people without a backup of their PRODINFO or building a NAND from scratch.

This tool is not meant to, and will not, unban a Switch console.

Limitations

Of course, as we do not have Nintendo's private keys, the generated files can't be perfect.

Here's what works:

	Booting	Homebrews	Amiibos	GameCards	Online
from scratch	✓	✓	✓
from donor	✓	✓	✓	✓

As such, a "from scratch" PRODINFO also acts as a more elaborate "Incognito".

USE THIS TOOL AT YOUR OWN RISK, DO NOT OVERWRITE A FACTORY PRODINFO WITHOUT MAKING A BACKUP FIRST.

Usage

• Make sure you have a /switch/prod.keys file on your microSD card with, at least, valid master keys in it.
• If you want to use a donor PRODINFO, place it at /switch/donor_prodinfo.bin. Note: If the donor is a patched or Mariko Switch, you will need to add the donor's device_key_4x key to the prod.keys file as donor_device_key_4x.
• Launch prodinfo_gen.bin using your favorite payload injector or chainloader.
• You should find /switch/generated_prodinfo_from_scratch.bin or /switch/generated_prodinfo_from_donor.bin depending on what you selected.
• You can now write that PRODINFO to your NAND using a tool such as HacDiskMount (it is recommended to make a backup of the current PRODINFO first).

Building

Install devkitARM and run make.

Credits

• This software is based on shchmue's Lockpick_RCM.
• GCM encryption primitives from Atmosphère
• Most of the reverse engineering work comes from shchmue, PabloZaiden, SwitchBrew

License

This project is under the GPLv2 license.