Problems with dual flash banks and ST-LINK
Answer
Version 1.3.0 of the GDB-Server for ST-LINK might in some cases experience problems when writing to devices containing dual flash banks. To overcome this issue please update to version 1.3.1 (or later) of the GDB-Server. Version 1.3.1 could be downloaded from here.
To make TrueSTUDIO aware of the new version please replace the contents in the "Atollic\TrueSTUDIO STM32 Pro 2.1.0\Servers\ST-LINK_gdbserver" directory with the new files.