https://devzone.nordicsemi.com/f/nordic-q-a/6241/keil-uvision-doesn-t-seem-to-be-building-files-properlyHi, I have my BLE services arranged in different .c files. If I change anything in these files and compile (using Keil uVision 5) and load the program, it seems like the changes I made to the code did not happen. E.g. I have an ADC Service, ble_adcsen-USTelligent Community 13Fri, 27 Mar 2015 15:02:24 GMThttps://devzone.nordicsemi.com/thread/21852?ContentTypeID=1Fri, 27 Mar 2015 15:02:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:19c896ea-484d-4942-9c7a-e2f1442b2ce1Jack<p>It seems that Charles is right, the Master Control Panel app was caching the characteristic information, so that changes in the code of the nRF51822 were not apparent on the Master Control Panel app. To overcome this, I bonded with the nRF51822, unbonded and then discovered services. This seemed to do the trick. You could also reinstall the Master Control Panel instead.</p> <p>Thanks for the help, I thought I was going mad</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/21851?ContentTypeID=1Thu, 26 Mar 2015 22:46:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eb0668c2-6309-46cc-93f1-0136c763aa0fCharles Manning<p>I don&#39;t know much about the Master Control Panel. It might be caching the values somehow. Perhaps there is a way to force it to refresh what it sees?</p><div style="clear:both;"></div>