To help you find the right path for your console, please let me know:

No. Hardware patches are physical changes in the system-on-chip (SoC). There is no software update that will ever make an XKJ1 console "unpatched" or hackable via a simple USB payload. What Options Remain for XKJ1 Users?

There are two primary methods for checking your Switch's status. For a serial number starting with XKJ1 , both methods will give the same, clear answer.

The only way to run custom firmware on an XKJ1 V2 Switch is by installing a physical modchip (like the HWFLY or Switchroot) inside the console.