https://devzone.nordicsemi.com/f/nordic-q-a/64308/how-to-change-the-static-passkeySDK14.0+NRF52832: firstly I init the passkey in the function gap_params_init as above.I want to change the passkey and can save the new passkey to flash, but when I input one new passkey and call the function sd_ble_opt_set again, error occurs（err_codeen-USTelligent Community 13Thu, 30 Jul 2020 11:42:34 GMThttps://devzone.nordicsemi.com/thread/262383?ContentTypeID=1Thu, 30 Jul 2020 11:42:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6bda3937-e87c-48b9-a4b2-3c1ab5a35a17Simonr<p>Hi</p> <p>Please check out <a href="https://devzone.nordicsemi.com/f/nordic-q-a/44658/communication-problems-between-ble_peripheral-and-ble_central-in-nrf52-project/176907#176907">this case</a>, where my colleague has uploaded code that lets you use a static passkey in the ble_app_uart peripheral and central examples. You should be able to use these examples as reference for your own project(s).</p> <p>Due to the summer vacation period in Norway, you have to expect delayed replies as we are low on staff at the moment. Sorry about the inconvenience!</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>