How to upload codes wirelessly to nRF51822 from nRF51-DK?

[fenx]

I generally upload codes from mbed.org to my PC then send the hex file to nRF51822 by nRF51-DK's pins. But I don't want to use cables to upload hex codes to nRF51822. Are there any solutions to change a beacon's code wirelessly? Thank you.

[fenx]

Hi, thank you for your help. My new problem is "GATT ERROR".

1. I downloaded Nordic's Tools App from Google Play to Samsung Note 3 Phone.
2. I generated a blink code for nRF51 on mbed and compiled with Nordic nRF51-DK and I tried both three options such as DEFAULT, APP WITH BOOTLADER, APP FOR FOTA
3. I put these three hex file into my phone
4. I pulled these three hex file to the Nordic APP
5. I choosed my nRF51-DK board with its unique MAC ID
6. I got three errors such as GATT connection timeout(I don't know why, this is a problem for me now), GATT internal error (while I am pressing reset button this error had diplayed in toast bar), GATT error (while I am pressing button1, button2, button3 and button4 each, this error has displayed in toast bar)

Could you please help me with step-by-step blink example? It is really needed. Thank you!

[bjorn-spockeli]

Did you flash the bootloader and the softdevice to the device before you initiated the DFU? Did the DK advertise as DfuTarg?