https://devzone.nordicsemi.com/f/nordic-q-a/14589/programming-nrf-51822-qfaa-hx0-with-51dk-on-keil-u5Hi all, So I want to give you a full description about what we are doing because we could not understand what we did wrong. Our DK : dk-51 Soft Device : S130_v1 Our IC : nrf51822 qfaa hx0 so our flash (Rom) : 256kb and our RAM:16 kb We are usingen-USTelligent Community 13Tue, 30 Nov 2021 02:30:14 GMThttps://devzone.nordicsemi.com/thread/341170?ContentTypeID=1Tue, 30 Nov 2021 02:30:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:154cd54b-40f5-4538-91b0-bc21c1832873ramonashaw<p>i used Arm mbed with <a href="https://fmwhatsappdownload.com/">fm whatsapp download new version</a> it works great compared to others</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/338978?ContentTypeID=1Mon, 15 Nov 2021 10:16:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fc7af6a2-9cf5-4d01-ae88-feae24f96fc9ramonashaw<p>Thank you for this additional information. very helpful to me</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/55690?ContentTypeID=1Mon, 20 Jun 2016 11:04:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:59a39ec4-9e64-4b77-9106-667c13072862Petter Myhre<p>If you are using SDK 10 you should use S130 v1, if you use SDK 11 you should use S130 v2. It seems you have changed the RAM setting in Keil correctly, but you haven&#39;t included any information what is actually not working. You get a compile error? Or is it something else?</p><div style="clear:both;"></div>