https://devzone.nordicsemi.com/f/nordic-q-a/90507/problem-upgrading-ncs-1-5-1-upgrade-to-ncs-1-9-1-failedHello, I am currently using nRF52840 + NCS 1.5.1 (including zephyr 2.4) I am using BG95/96 model meaning offloaded socket to have internet connection for leshain &amp; lwm2m The application was working fine until I upgrade to NCS 1.9.1 (including zephyr 2en-USTelligent Community 13Tue, 02 Aug 2022 10:56:24 GMThttps://devzone.nordicsemi.com/thread/379685?ContentTypeID=1Tue, 02 Aug 2022 10:56:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:14d01e93-1f50-4dcf-88a9-f5bf78e89aaeSusheel Nuguru<p>Great, thanks</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/379672?ContentTypeID=1Tue, 02 Aug 2022 10:19:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2db8afcf-36fc-4efe-a19d-07bf699d32b2nRF5xFanboy<p>OK I will try that and come back</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/379643?ContentTypeID=1Tue, 02 Aug 2022 08:09:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9174241f-117d-4b31-8dc7-24a3157a79a0Susheel Nuguru<p>It looks like the thread which caused the hardfault have a stack overflow (or memory corruption) so that a pop jumped to an invalid address. The thread stack size requirements might have changed over releases. Please try to increase the thread stack sizes that are relevant to your application and test this again.</p><div style="clear:both;"></div>