https://devzone.nordicsemi.com/f/nordic-q-a/15246/s110-softdevice-initialization-about-swiPreviously I implemented a DFU bootloader. It works fine on s120 softdevice. But after I ported it to s110 v7.0 softdevice, it can not work. After investigation, I found that after softdevice initialization, SWI0 and SWI2 are disabled. Is there any differenceen-USTelligent Community 13Wed, 20 Jul 2016 11:53:54 GMThttps://devzone.nordicsemi.com/thread/58214?ContentTypeID=1Wed, 20 Jul 2016 11:53:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:afe3cdf5-5c1d-4a90-9385-bffd927dd8a8Hung Bui<p>@Daniel: SWI0 is unused and available for application on both S110 and S120. SWI2 is used by softdevice and should not be used by application (both S110 and S120). S110 and S120 are very similar, in the sense of how it works and the resource used. There should not be much difference between them.</p> <p>What kind of DFU bootloader did you make for S120? Did you use our bootloader as the reference ?</p><div style="clear:both;"></div>