SAK VS aio-switch-updater

https://github.com/Aionmagan/NSPsplitty or https://github.com/dezem/SAK/releases

You CAN NOT use the most recent keys (16.0.2) for TOTK. You have to use the older ones (16.0.1) to run it. In order to install update 1.1, you have to downpatch the update NSP using Switch Army Knife (SAK). Put your newer keys into SAK’s bin folder and then downpatch the NSP. Then ensure you have the older keys in Yuzu’s key folder, install the update, and then run the game.

I have not used it before but you can try https://github.com/dezem/SAK

https://github.com/dezem/SAK https://psxtools.de/forum/index.php?thread/77281-tool-switch-army-knife-sak-by-kempa/

use dbi or tinwoo. if you want to convert the xci to nsp you can do that using switch army knife and install it using whatever method you were using before.

It's because you're trying to install it from a XCI file. It isn't recommended to do that and most times won't work when doing so. Try using an XCI to NSP converter. Here's one I found: https://github.com/dezem/SAK though you need a fully-populated keys.dat file for it to work. But you can just do that from Lockpick_RCM.

No but yes. While obviously there is no official way, a tool called switch army knife can patch games to run on lower firmwares.

Switch Army Knife (SAK) - Found here: https://github.com/dezem/SAK/releases

Have you checked AIO? There is a good chance that FW its already there.

You can also grab it from their GitHub, you should be able to get some info there

put this on sd https://github.com/HamletDuFromage/aio-switch-updater update

Now as for the 2nd section you can just get the official firmware through AIO updater. After getting the OFW just follow the third section and you should be good to go.

Use AIO Updater