https://devzone.nordicsemi.com/f/nordic-q-a/42693/pca10028-sdkI have been working successfully on both PCA10040 and PCA10056 I want to work with NRF51822. When I look at my sdk I see no folders for my PCA10028. I see folders in PCA10028 SDK_10.0.0 and so I tried that. I see the PCA10028 in Nordic Studioen-USTelligent Community 13Mon, 21 Jan 2019 08:26:14 GMThttps://devzone.nordicsemi.com/thread/166735?ContentTypeID=1Mon, 21 Jan 2019 08:26:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:40290aa5-3932-4783-b925-7329fcab9e95ovrebekk<p>Hi Richard</p> <p>You can download the SDK here:<br /><a href="https://www.nordicsemi.com/Software-and-Tools/Software/nRF5-SDK/Download">https://www.nordicsemi.com/Software-and-Tools/Software/nRF5-SDK/Download</a></p> <p>First you have to select the SDK version you are interested in, and scroll down to the &quot;Download Files&quot; button at the bottom of the page.&nbsp;</p> <p>Then you can download the SDK and the associated SoftDevices easily.&nbsp;</p> <p>Best regards<br />Torbjørn</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/166601?ContentTypeID=1Sat, 19 Jan 2019 00:12:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cca76036-d370-4872-9bb6-64f512d104abRicco<p>After much searching I am at a loss, can you provide a link to download SDK v12.3.0 ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/166417?ContentTypeID=1Fri, 18 Jan 2019 09:16:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d9be7a5b-038a-4695-8895-ccf15c8d6568ovrebekk<p>Hi Richard</p> <p>The last SDK with support for the nRF51822 is SDK v12.3.0.&nbsp;</p> <p>After that we deprecated nRF51 support to focus on the nRF52 series only.&nbsp;</p> <p>In other words I suggest you based your design on SDK v12.3.0 if you need nRF51 support.&nbsp;</p> <p>Best regards<br />Torbjørn</p><div style="clear:both;"></div>