https://devzone.nordicsemi.com/f/nordic-q-a/15034/nrf51822-ficr-cleared-root-causeWe have two nRF51822 chips with cleared contents in FICR, e.g. addresses 0x10000000 - 0x100000FF are 0xFFFFFFFF. UICR works as expected. Chips execute code. Radio performance possible lower than normal (not verified though). Please advise on potentialen-USTelligent Community 13Mon, 11 Jul 2016 08:36:02 GMThttps://devzone.nordicsemi.com/thread/57367?ContentTypeID=1Mon, 11 Jul 2016 08:36:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:16508076-8371-441b-a09d-8888faa2e1ccHung Bui<p>Hi Pablo,</p> <p>Please create a support case in our support portal (MyPage) <a href="https://www.nordicsemi.com/">here</a>. We would need more information from you.</p><div style="clear:both;"></div>