https://devzone.nordicsemi.com/f/nordic-q-a/28983/s140-nrf52840-manufacturer-adv-dataHi All! I must to add some binary data to ADV packet use Manufacturer Specific field. I fill the related fields: static uint16_t adc0_data = 0; // ADC measured data (BATTERY) ... advdata.p_manuf_specific_data-&gt;company_identifier = 0x0001; advdataen-USTelligent Community 13Sun, 07 Jan 2018 20:39:19 GMThttps://devzone.nordicsemi.com/thread/114614?ContentTypeID=1Sun, 07 Jan 2018 20:39:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:65b5ab64-bd04-4515-8854-757e05fba9c3RK<p>no it is very unlikely that SDK 14.2 has a bug in the advertising module, that&#39;s very old stable code which people have been using successfully for years. It&#39;s far more likely you used the module incorrectly.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/114615?ContentTypeID=1Sun, 07 Jan 2018 14:30:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dd37deb5-c595-4cd2-af5c-316aa1abe2bbAylik<p>I solve the problem, it is the SDK 14.2 possible internal BUG/ERROR. If I use sd_ble_gap_adv_data_set(..) directly instead of SDK14.2 module, it works GOOD for me.</p><div style="clear:both;"></div>