Let us assume you have an Switch (XAW1 serial number) or a ModChipped Switch. You don't need a weird YouTube exploit. Here is the standard, safe workflow for installing patched (custom) NSPs:
Between firmware versions 4.0 and 7.0, hackers discovered that the YouTube application used a vulnerable version of the WebKit rendering engine. By forcing the YouTube app to load a malicious local webpage (via DNS redirection or save data modification), a hacker could gain code execution. youtube patched nsp install
This usually means the NSP is not patched correctly for your firmware, or your signature patches are broken. Let us assume you have an Switch (XAW1
: A popular multi-purpose tool that can install NSPs directly from the SD card or over a USB connection using a PC client. youtube patched nsp install