Can't change the Vout in the REGOUT0 for the second time

Can't change the Vout in the REGOUT0 for the second timehttps://devzone.nordicsemi.com/f/nordic-q-a/107401/can-t-change-the-vout-in-the-regout0-for-the-second-timeSome time ago I changed the Vout of my nRF52840_dongle from the default 1.8V to 3.0V usign the following board's initial source file All worked fine and my dongle Vout rised to 3.0V. But now I want to rise the Vout to 3.3V and I modified the sourceen-USTelligent Community 13Tue, 16 Jan 2024 09:14:51 GMTRE: Can't change the Vout in the REGOUT0 for the second timehttps://devzone.nordicsemi.com/thread/464326?ContentTypeID=1Tue, 16 Jan 2024 09:14:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bf9674b2-b18f-43ef-b5b3-8d22022b0287Andrea Verdecchia<p>I found by myself the solution <a href="https://devzone.nordicsemi.com/f/nordic-q-a/96349/how-to-use-vddh-dcch-and-vdd">here</a>:</p> <p><em>"[...] Note that UICR works like flash, and bits can only be flipped from 1 to 0 by writing. Changing a bit in UICR from 0 to 1 requires you to erase the full UICR page. [...]"</em></p> <p>in the NRF Connect in Visual Studio Code just "<em>Erase and Flash to Board"</em></p><div style="clear:both;"></div>