https://devzone.nordicsemi.com/f/nordic-q-a/124495/error-invalid-rom-table-when-erase-or-download-nrf52810I&#39;m building my small board with nrf52810, buyed 10 chips from seller, it is cheaper relatively, I know it is used chip. 7 of them burned successfully,but 3 of them raise &quot;Invalid ROM table&quot;, other hardware reasons has been ruled out,for it will been-USTelligent Community 13Sat, 10 Jan 2026 07:09:19 GMThttps://devzone.nordicsemi.com/thread/558430?ContentTypeID=1Sat, 10 Jan 2026 07:09:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5e31d6aa-53b4-494f-bf4a-7a61badc7e46ericmartinez<p>Hello @ <a href="https://geometrydashs.com">geometry dash</a>,&nbsp;on nRF52810, &ldquo;Invalid ROM table&rdquo; means the SWD debug interface is blocked, usually because the previous owner enabled APPROTECT. It&rsquo;s not caused by your code, oscillator, or circuit. If a full recover/mass erase doesn&rsquo;t fix it, the chip is likely damaged or defective.</p><div style="clear:both;"></div>