If your Switch is safely blocked from Nintendo Servers (using DNS MITM or Exosphere) to prevent a ban, you cannot update online.
The 1011 patch for Overcooked! All You Can Eat was released to address critical performance issues, particularly on Nintendo Switch. Key updates included in this patch (and preceding it) often include: overcooked all you can eat nspupdate 1011 install
If you prefer Tinfoil, the process is similar. However, be aware that standard Tinfoil can sometimes reject manually downloaded NSP files that are not sourced from a "shop". Nevertheless, the installation process is as follows: If your Switch is safely blocked from Nintendo
For files larger than 4GB (standard for FAT32 SD cards), direct USB transfer is preferred to avoid splitting files. the process is similar. However