NS-USBloader: Awoo Installer and GoldLeaf uploader of the NSPs (and other files), RCM payload injector, application for split/merge files:

• https://gbatemp.net/threads/ns-usbloader-another-one-tinfoil-and-goldleaf-usb-installer.533394/

• https://github.com/developersu/ns-usbloader

Also for Android, NS-USBloader mobile:

• https://github.com/developersu/ns-usbloader-mobile

• https://f-droid.org/packages/com.blogspot.developersu.ns_usbloader/