https://devzone.nordicsemi.com/f/nordic-q-a/7179/resets-to-dfutargHi Im using nrf51822 board from RedbearLab. SDK6.1and SD7.1.0. I added DFU to my application and iam able to update the firmware OTA. My issue is after adding dfu to my application, whenever i resets/power reset the board it starts advertisingen-USTelligent Community 13Thu, 21 May 2015 09:02:10 GMThttps://devzone.nordicsemi.com/thread/25369?ContentTypeID=1Thu, 21 May 2015 09:02:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ac8133b2-83bc-400a-8d9b-132c8539b522pramithkv<p>iam not using button mode , im entering in dfu mode by writing dfucontrol point characteristic and its cccd</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/25368?ContentTypeID=1Thu, 21 May 2015 08:58:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:98a58e88-50c9-4bc5-8bbe-42a946876fe4YEN<p>In the sample code.It goes to DFU in only two ways.Button 7 LOW or APP location is invaild.After DFU couled you goes to your APP ZONE?If yes,when you do reset does the button pull high?maybe you can try after DFU you connect the button 7 to VCC .Ensure that when you reset the pin is high. By the way,how do you go into DFU MODE?the button way?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/25367?ContentTypeID=1Thu, 21 May 2015 07:57:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:63497333-311f-426c-8c3b-fae3dd8f04c8pramithkv<p>iam able to do dfu. but after doing dfu if i reset my device it starts advertising as dfu targ</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/25366?ContentTypeID=1Thu, 21 May 2015 07:40:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:503227b3-344b-4bd7-ba12-a249f8f43ea1YEN<p>If you didn&#39;t edit the sample code , button 7 have to be pushed ( PULL LOW)when you start the system,and the bootloader app will check the button 7,High will go to App, Low will stay in bootloader then wait for the DFU start.</p><div style="clear:both;"></div>