ROM Hack Question How to extract SSBU update ROM

[trainboy2019]

Hi, I've seen there are some threads about this topic, but they didn't work for me, and replying to them would've been a necrobump. Could someone help me extract the data.arc from the latest SSBU update? I've got the nsp files and extracted the NCA, but I can't get the romfs.

 

[masagrator]

hactool -k keys.txt --titlekey=*base_titlekey* --plaintext=decrypted.nca base.nca
hactool -k keys.txt --basenca=decrypted.nca --titlekey=*update_titlekey* --romfsdir=romfs update.nca

Little cheat sheet