willfaust/README.md

## README.md

      
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              README.md
            
          
    NSP Update Patcher

Instructions:

Place your base NSP, update NSP, and prod.keys into a new folder
Open a terminal and cd into this folder
Download and run script:

curl -o nsp_update_patcher.sh https://gist.githubusercontent.com/willfaust/fb90dec409b8918290012031f09a78ef/raw/9abf2e1b020203aec0051fad99524f8269cb1edd/nsp_update_patcher.sh && chmod +x nsp_update_patcher.sh && ./nsp_update_patcher.sh


Notice:

This script assumes that the larger NSP is the base, and the smaller NSP is the update
Your free drive space should be at least three times the size of your base and update NSPs combined
You must have your product keys dumped from your switch

Credit to hactool and hacPack

  
## nsp_update_patcher.sh
# find base and update NSPs
basensp=$(ls -S *.nsp | head -1)
updatensp=$(ls -Sr *.nsp | head -1)

# clone and build hactool and hacpack
git clone https://github.com/SciresM/hactool
mv hactool hactoolsrc
cd hactoolsrc
mv config.mk.template config.mk
make
mv hactool ..
cd ..
rm -rf hactoolsrc

git clone https://github.com/The-4n/hacPack
mv hacPack hacpacksrc
cd hacpacksrc
mv config.mk.template config.mk
make
mv hacpack ..
cd ..
rm -rf hacpacksrc

mkdir -p ~/.switch
cp prod.keys ~/.switch
touch ~/.switch/title.keys

mkdir temp hactool_out
cd hactool_out

# derive title keys from base and update NSPs
derivekey () {
	title=$(xxd *.tik | grep -oP -m 1 "(?<=2a0: ).{39}" | sed 's/ //g')
	key=$(xxd *.tik | grep -oP -m 1 "(?<=180: ).{39}" | sed 's/ //g')
	sed -i "/$title=$key/d" ~/.switch/title.keys
	echo $title=$key >> ~/.switch/title.keys
}
../hactool -t pfs0 "../$basensp" --outdir .
derivekey
rm *
../hactool -t pfs0 "../$updatensp" --outdir .
derivekey
rm *

# extract base NSP and move program NCA to temp dir
../hactool -t pfs0 "../$basensp" --outdir .
for i in *.nca
do
	type=$(../hactool $i | grep -oP "(?<=Content Type:\s{23}).*")
	if [ $type == "Program" ]; then
		basenca=$i
		mv $i ../temp
	fi
done
rm *

# extract update NSP and move program & control NCAs to temp dir
../hactool -t pfs0 "../$updatensp" --outdir .
for i in *.nca
do
	type=$(../hactool $i | grep -oP "(?<=Content Type:\s{23}).*")
	if [ $type == "Program" ]; then
		updatenca=$i
		mv $i ../temp
	elif [ $type == "Control" ]; then
		controlnca=$i
		mv $i ../temp
	fi
done
rm *

cd ..
rm -rf hactool_out

mv hactool temp/
mv hacpack temp/
cd temp

# parse Title ID from base program NCA
titleid=$(./hactool $basenca | grep -oP "(?<=Title ID:\s{27}).*")

# extract base and update NCAs into romfs end exefs
mkdir exefs romfs
./hactool --basenca="$basenca" $updatenca --romfsdir="romfs" --exefsdir="exefs"
rm $basenca $updatenca

# pack romfs and exefs into one NCA
mkdir nca
./hacpack --type="nca" --ncatype="program" --plaintext --exefsdir="exefs" --romfsdir="romfs" --titleid="$titleid" --outdir="nca"
patchednca=$(ls nca)
mv $controlnca nca
rm -rf exefs romfs

# generate meta NCA from patched NCA and control NCA
./hacpack --type="nca" --ncatype="meta" --titletype="application" --programnca="nca/$patchednca" --controlnca="nca/$controlnca" --titleid="$titleid" --outdir="nca"

# pack all three NCAs into an NSP
mkdir nsp
./hacpack --type="nsp" --ncadir="nca" --titleid="$titleid" --outdir="nsp"

cd ..
mv temp/nsp/$titleid.nsp ./$titleid[patched].nsp
rm -rf temp
	# find base and update NSPs
	basensp=$(ls -S *.nsp \| head -1)
	updatensp=$(ls -Sr *.nsp \| head -1)

	# clone and build hactool and hacpack
	git clone https://github.com/SciresM/hactool
	mv hactool hactoolsrc
	cd hactoolsrc
	mv config.mk.template config.mk
	make
	mv hactool ..
	cd ..
	rm -rf hactoolsrc

	git clone https://github.com/The-4n/hacPack
	mv hacPack hacpacksrc
	cd hacpacksrc
	mv config.mk.template config.mk
	make
	mv hacpack ..
	cd ..
	rm -rf hacpacksrc

	mkdir -p ~/.switch
	cp prod.keys ~/.switch
	touch ~/.switch/title.keys

	mkdir temp hactool_out
	cd hactool_out

	# derive title keys from base and update NSPs
	derivekey () {
	title=$(xxd *.tik \| grep -oP -m 1 "(?<=2a0: ).{39}" \| sed 's/ //g')
	key=$(xxd *.tik \| grep -oP -m 1 "(?<=180: ).{39}" \| sed 's/ //g')
	sed -i "/$title=$key/d" ~/.switch/title.keys
	echo $title=$key >> ~/.switch/title.keys
	}
	../hactool -t pfs0 "../$basensp" --outdir .
	derivekey
	rm *
	../hactool -t pfs0 "../$updatensp" --outdir .
	derivekey
	rm *

	# extract base NSP and move program NCA to temp dir
	../hactool -t pfs0 "../$basensp" --outdir .
	for i in *.nca
	do
	type=$(../hactool $i \| grep -oP "(?<=Content Type:\s{23}).*")
	if [ $type == "Program" ]; then
	basenca=$i
	mv $i ../temp
	fi
	done
	rm *

	# extract update NSP and move program & control NCAs to temp dir
	../hactool -t pfs0 "../$updatensp" --outdir .
	for i in *.nca
	do
	type=$(../hactool $i \| grep -oP "(?<=Content Type:\s{23}).*")
	if [ $type == "Program" ]; then
	updatenca=$i
	mv $i ../temp
	elif [ $type == "Control" ]; then
	controlnca=$i
	mv $i ../temp
	fi
	done
	rm *

	cd ..
	rm -rf hactool_out

	mv hactool temp/
	mv hacpack temp/
	cd temp

	# parse Title ID from base program NCA
	titleid=$(./hactool $basenca \| grep -oP "(?<=Title ID:\s{27}).*")

	# extract base and update NCAs into romfs end exefs
	mkdir exefs romfs
	./hactool --basenca="$basenca" $updatenca --romfsdir="romfs" --exefsdir="exefs"
	rm $basenca $updatenca

	# pack romfs and exefs into one NCA
	mkdir nca
	./hacpack --type="nca" --ncatype="program" --plaintext --exefsdir="exefs" --romfsdir="romfs" --titleid="$titleid" --outdir="nca"
	patchednca=$(ls nca)
	mv $controlnca nca
	rm -rf exefs romfs

	# generate meta NCA from patched NCA and control NCA
	./hacpack --type="nca" --ncatype="meta" --titletype="application" --programnca="nca/$patchednca" --controlnca="nca/$controlnca" --titleid="$titleid" --outdir="nca"

	# pack all three NCAs into an NSP
	mkdir nsp
	./hacpack --type="nsp" --ncadir="nca" --titleid="$titleid" --outdir="nsp"

	cd ..
	mv temp/nsp/$titleid.nsp ./$titleid[patched].nsp
	rm -rf temp