Programming Application in Specified address and Debug
Hi,
Your problem was described, and solved, in several forum topics; for example look at http://www.openstm32.org/forumthread2364, the previous to last post explain how to avoid the bootloader to be erased when programming the application and may help you.
Also do not forget to change the vector table offset as explained in the same post.
For more information on this just do a search for "bootloader" in the forum.
Bernard (Ac6)