NxNandManager VS Lockpick_RCM

I believe https://github.com/eliboa/NxNandManager might work. But if your nand is corrupted, there might not be a way to get those files.

You could try to extract the saves from the emunand (if its not corrupted yet). You can use nxnandmanager tool (read their github on how to) OR follow this guide

Hmmmm. Take a look at this. It might be more useful than me.

From there download NxNandManager here https://github.com/eliboa/NxNandManager

Not automatically, no. You'd have to use something like JKSV on sysNAND CFW to export the saves and import them into emuNAND. Alternatively you can use NxNandManager, which is more complicated.

You should be able to, yes. The NxNandManager tool by eliboa has a feature where you can resize the USER partition of the input NAND. You'll need to dump your keyset using Lockpick_RCM so that NxNandManager can interact with the backup.

NxNandManager (https://github.com/eliboa/NxNandManager) and your switch's keys to decrypt save from user partition.

Due to changes imposed by firmware 7.0.0, Lockpick homebrew can no longer derive the latest keys. In the boot-time environment however, there is no such limitation.https://github.com/shchmue/Lockpick_RCM

origin https://github.com/shchmue/Lockpick_RCM (fetch)

Reminder to download backup and distribute this before Nintendo removes your ability to emulate their games

You need to use the Lockpick_RCM payload to generate the keys that NxNandManager wants in its keyset, and then you need to give NxNandManager the keys by placing the .keys files in the program folder and then working in Options > Configure keyset.