https://devzone.nordicsemi.com/f/nordic-q-a/22072/nrf52-flash-timeout-every-second-attemptHi all, I am using a J link to program a NRF52 via keil. It is successful but, every second program it fails with a Flash timeout error. I am programming the application with S132 already programmed. Any ideas on why this is and how to solveen-USTelligent Community 13Wed, 21 Jun 2017 14:54:23 GMThttps://devzone.nordicsemi.com/thread/86679?ContentTypeID=1Wed, 21 Jun 2017 14:54:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d60e65d5-54da-407b-a96b-b5206493fedfHung Bui<p>Could you take a screenshot of the project ? if possible, please send your project to me via PM.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/86678?ContentTypeID=1Tue, 20 Jun 2017 22:59:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dd4f5922-0e27-4bf3-95ad-94e3677285fagoldwake<p>Hi @hungbui it seems to be something to do with my Keil project. When I program a NRF52 DK or my custom board with an example app using Keil, it works every time. However, if I program a NRF52 DK or my custom board with my app using Keil, it fails to program every second time. If i use nrfjrog to program my app, it works every time. What could be cause the problem in Keil?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/86680?ContentTypeID=1Tue, 16 May 2017 10:51:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3419f8fd-0d9c-4eaf-9b2e-91acb3dcce6bHung Bui<p>Hi,</p> <p>Do you have another board for testing ?</p> <p>Which example are you testing ?</p> <p>Could you test with an example requires no softdevice, such as the blinky example?</p> <p>Could you try to use nrfjprog to program ? You can use this syntax:</p> <pre><code>nrfjprog.exe --program your_application.hex --sectorerase -f NRF52 </code></pre><div style="clear:both;"></div>