Cannot Get NXDumpTool to Work on 21.1.0?

[YoNoid]

I have a Switch V2 with a Picofly. Everything works fine except that I tried to backup a new cart I have and found that the NX Dump Tool is not working.

I am on 21.1.0 (as stated in the title, I am using the latest HATS pack as of writing this and I also updated the NX Dump Tool to the version found here:

https://nightly.link/DarkMatterCore/nxdumptool/workflows/rewrite/rewrite

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The issue is that I keep getting this error:
"An error occurred while initializing resources

keysDeriveMasterKeys: "mariko_kek" unavailable! Unable derive current mastery key."

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This guide here states to brute force the partial keys, but I cannot find the meu command to dump that file:

Lockpick_RCM 1.9.16 (FW 21.0.0) Zoria Hekate

Nov 11, 2025

Lockpick_RCM 1.9.16 (FW 21.0.0) Zoria Hekate

• impeeza
• Soft mods & Loaders

I can only get the prod and title keys. Any ideas? Any other way to dump XCI and BINs from cart. I want to redump my carts to use on the Mig Flash, but my current dumps are trimmed. So I want to redump the full image file.

Anyone else having success with all the latest updates in place?

 

[YoNoid]

I found the menu item to export the partial - here is my screenshot:

and I ran the PartialAesKeyCrack.exe as per the instructions. I have a Key it now found:

[09:55:47:070061] T[27084]: Runner 17 FOUND KEY XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX for pass 4
Finished all passes in 0 minutes 41 seconds 391 ms
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX


What do you do with this key value? Wasn't sure where to go from here.