https://devzone.nordicsemi.com/f/nordic-q-a/58788/programming-fails-on-flex-pcbHi Gene, One of my customers using our module to pilot run. https://static1.squarespace.com/static/561459a2e4b0b39f5cefa12e/t/5da77e178970da0cc270ef0d/1571257883383/BM832A_datasheets.pdf When they put the module on their flex PCBs. Some of boardsen-USTelligent Community 13Wed, 11 Mar 2020 06:27:57 GMThttps://devzone.nordicsemi.com/thread/239250?ContentTypeID=1Wed, 11 Mar 2020 06:27:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1b3d6e75-fb8d-40fb-8844-c5a83878bf70LeoChen<p>Hi Amanda,</p> <p>My customer have&nbsp;concluded it isn&#39;t the module, but a cold solder joint on swdio or swdclk.</p> <p>Thanks for your support.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/238557?ContentTypeID=1Fri, 06 Mar 2020 14:27:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:212efdc3-8b45-4fba-ba3a-0b1d61ff4087Amanda Hsieh<p>Hi,&nbsp;</p> <p>What programmer do they use?&nbsp;</p> <p>How the boards are powered. E.g. is it battery powered ? If yes, then what type of battery is used? What is the voltage supplied to the chip? Please make sure the voltage is 3.3v.&nbsp;</p> <p>-Amanda H.</p><div style="clear:both;"></div>