https://devzone.nordicsemi.com/f/nordic-q-a/70491/nrfjprog-clarification---eraseall-vs---chiperase-vs---recoverHello, Is calling --eraseall before calling --program the same as combining --program with --chiperase? Does --recover erase all the areas that --eraseall and --chiperase erase plus the readback protection registers? Thank you!en-USTelligent Community 13Tue, 19 Jan 2021 15:52:20 GMThttps://devzone.nordicsemi.com/thread/290058?ContentTypeID=1Tue, 19 Jan 2021 15:52:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bba03b6b-e934-484d-a949-1f0d06389e0berickcinco<p>Thank you for the clarification.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/289414?ContentTypeID=1Fri, 15 Jan 2021 12:59:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:22cba64e-2876-4401-9708-92be4d63a0faMarte Myrvold<p>Hi,</p> <p>The different nrfjprog commands can be found&nbsp;<a href="https://infocenter.nordicsemi.com/topic/ug_nrf_cltools/UG/cltools/nrf_nrfjprogexe_reference.html">here</a>.</p> <p>From the documentation: --eraseall erases all user available program flash memory and the UICR page, and --chiperae erases all the available non-volatile memory and UICR. So to answer your question, running --eraseall before --program is the same as when you run --program with --chiperase. The only difference between them is that --chiperase can be combined with --program.</p> <p>Yes, --recover erases all user flash memory, so it will erase all the areas that --eraseall and --chiperase erase, also UICR, in addition to the readback protection mechanism.</p> <p>Best regards,</p> <p>Marte</p><div style="clear:both;"></div>