OMG!!Thanks so much! *** me, I did not scroll all the way to the bottom of the "Erase selected sectors" screen. This is much more convenient than doing from the command line.Thanks for your help,Ed

DNick.1,I just ran into the same issue as you. I know it has been 3.5 years since your post, but maybe my reply will help others.You can use the command line version of STM32 Cube Programmer. On my Windows 10 computer, the command line version of the...