I can't use nRF5 SDK 13.0.0 for nRF52840 DK board.

[Gót G?y]

As the tittle. I load example in SDK 13 to nrf52840 DK but It does not generate bluetooth.

[endnode]

So poor description. Could you be more specific which part from nRF5 SDK you use with nRF52840 Preview DK, how, what do you expect to happen and what do you observe instead?

[Sigurd]

What example did you test? Did you remember to flash the S140 SoftDevice?

[Gót G?y]

I test with BLE_Blink_led example. I rebuild example (press F7) then flash to MCU ( press F8). I use my mobile ( have nRF tool box) to see bluetooth but don't have any bluetooth.

[endnode]

Looks like you don't have Soft Device flashed. Can you check in nRFgo Studio what do you have in the flash of nRF52 chip?