https://devzone.nordicsemi.com/f/nordic-q-a/45411/dfu-control-point---set-packet-receipt-notificationSo im trying to interact with a nrf52 chip. I am using iOS corebluetooth to communicate with the device and when the device sends a long data packet (~400 bytes) iOS drops some packets and loses them, I wanted to changed the number pf packet receipt notificationen-USTelligent Community 13Wed, 27 Mar 2019 17:17:44 GMThttps://devzone.nordicsemi.com/thread/178776?ContentTypeID=1Wed, 27 Mar 2019 17:17:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:77fbbaf3-93fe-4592-b882-0970c2832aa9Twan<p>Thanks for the link! That will help. But for now I just wanted to test my theory, is it possible to just use the nRFConnect iOS app and write some bytes to DFU characteristic to change the PRN?&nbsp;</p> <p>Lets say I want to change PRN to 20 Bytes (0x14) and the command for PRN is 0x02. The spec says its little endian. So I would want to write 0x1402?&nbsp;</p> <p>Again thanks for the response, I have little experience with this nRF stuff.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/178682?ContentTypeID=1Wed, 27 Mar 2019 13:21:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:949a5b0f-198b-42f8-b6a0-1b7a69c647acEinar Thorsrud<p>Hi,</p> <p>I suggest you use the <a href="https://github.com/NordicSemiconductor/IOS-Pods-DFU-Library">IOS-Pods-DFU-Library</a>&nbsp;instead of implementing this yourself. That is what is used in for instance nRF Connect for iOS. There you can also set the PRN to whatever number you like.</p><div style="clear:both;"></div>