nRF52833 - OpenOCD ST-LINK MEM-AP Access Failure During Flashinghttps://devzone.nordicsemi.com/f/nordic-q-a/128391/nrf52833---openocd-st-link-mem-ap-access-failure-during-flashingSubject: nRF52833 - OpenOCD ST-LINK MEM-AP Access Failure During Flashing Hello Nordic Support Team, I am working with an nRF52833 module and trying to flash firmware using OpenOCD 0.12.0 and an ST-LINK V2 debugger. Environment: Device: nRF52833en-USTelligent Community 13Tue, 09 Jun 2026 07:53:53 GMTRE: nRF52833 - OpenOCD ST-LINK MEM-AP Access Failure During Flashinghttps://devzone.nordicsemi.com/thread/567575?ContentTypeID=1Tue, 09 Jun 2026 07:53:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e8a9d96d-c893-486d-9479-b9c0b166bc4dTurbo J<p>Devices is in &quot;locked&quot; state and needs the recovery procedure. No idea how to do that in OpenOCD. Look at the various CFG files for the NRF5x MCUs and pray that somebody implemented the recovery already.</p> <p>Otherwise you will need a J-Link and nrfutil/nrfjprog command line tool.</p><div style="clear:both;"></div>