ROM Hack Question Applying ips patch to nsp

[duckbill007]

Hi!

I know that i can just put ips into exefs_patches to aplly it on the fly, but my question not about this.

I want to integrate translation into nsp, so it will be one installable file.
Integration patches/romfs is easy. I do understand how to unpack nca/apply update/replace romfs files.

My question is - what to do with IPS?

I do understand that it is applied to some NSO.

What are my steps?
1. extract exefs from program nca
2. what tool should I use to apply IPS? Is LunarIPS good for this?
3. what file should this ips be applied?

 

[masagrator]

To apply patch to main you need to decompress it, patch and compress again. Only known option for me is to convert nso to elf, patch it abnd use elf2nso to get it back to nso

 

[duckbill007]

So, I should use hactool to decompress nso?

 

[masagrator]

So, I should use hactool to decompress nso?

Nope, it won't help you, because there is no tool that can compress it again iirc.

Use nso2elf for decompressing and getting elf, patch it and use elf2nso to compress it and get nso.

 

[duckbill007]

Patch created against uncompressed nso, not elf, so elf is no way.

Also I found nsnsotool that do compress/decompress nso.
Thank you.
Problem solved

 

[masagrator]

Patch created against uncompressed nso, not elf, so elf is no way.

It's just a matter of different offset...

Good to know that nsnsotool exists.

 

[harkyzs]

Patch created against uncompressed nso, not elf, so elf is no way.

Also I found nsnsotool that do compress/decompress nso.
Thank you.
Problem solved

Is it possible for you to say all the programs you used? or leave a small tutorial? wanted to apply an ips patch on an nsp

 

[masagrator]

Is it possible for you to say all the programs you used? or leave a small tutorial? wanted to apply an ips patch on an nsp

You cannot do that. IPS patches are for NSO/NRO, not for NSP.

 

[ruje0504]

Is it possible for you to say all the programs you used? or leave a small tutorial? wanted to apply an ips patch on an nsp

When you know how to generate ips, you can know what to do.
Throw your “exefs/main” into ida to check the offset.

Post automatically merged: Jan 23, 2023

The author of ips also should not want to use it to directly patched and generate an exefs,With greater legal risks.