Cant reset/erase

Good day.

I saved some code, then i want reset to blank state.

check
check
check
check
check
check
>reset()
=undefined
Uncaught Error: Expecting a function to call, got Uint8Array
 at line 1 col 1
reset()
 ^
check
check
check

And nothing to reset ... dump of saved code

>dump()
var poll = new Uint8Array([252, 5]);
var reset = new Uint8Array([252, 5]);
setInterval(function () {
    print('check');
    if (Serial4.available()) {
      print(Serial4.read());
    }
  }, 500);
Serial4.setup(9600, {"parity":"even","bytesize":8,"stopbits":1});
pinMode(A10,"input_pullup");
pinMode(C11,"input_pullup");

p.s. reset button did not help too