Putting sawndz in the Brawl ISO disc while using Gecko and another question

[Vaild Address]

I've heard that you can put sawndz on gecko by editing the brawl ISO disc but idk how to edit the disc, can someone show me a tutorial of how to do it? And for riivolution for gecko users, it doesn't work for PSAs on transformation characters like sheik with the spiderman PSA.

[ABloodyCanadian]

For the PSA Characters on Riivolution. Some characters require their files to be placed in a common.pac file. I don't remember which one...

As for the SFX, you import the sawndz file into a BRSAR file using Sawndz or Super Sawndz. You then put that BRSAR file into the brawl ISO.

[Vaild Address]

In an actual brawl disc ISO or a ripped ISO?