Why stm32f103's elf file works well, but binary not?

I'm trying to run out my firmware inside stm32f103. So when I use opencod+gdb uploading and debugging elf file, everything is fine, my firmware is working and I can set and remove breakpoints.

But it doens't work when I try to upload this firmware (which was built together with elf file) using st-flash and writing it into 0x8000000. Although I get the message that 'the firmware was uploaded successfully'.

I can see if my code runs when my leds start blinking.

BOOT0 is connected to the DTR pin of a cp2102 via npn transistor, according to the datasheet to enable bootloader. I have to set BOOT0 to high. But my serial (cp2102) is not connected when I upload my fw via st-link. So I think that DTR pin is floating or pulled down. Where is my mistake?

I was trying to mass erase my flash before uploading, it gives the same results

here is my linker's ld file:

MEMORY
{
  RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 20K
  CCMRAM (xrw) : ORIGIN = 0x00000000, LENGTH = 0
  FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 64K
  FLASHB1 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  EXTMEMB0 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  EXTMEMB1 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  EXTMEMB2 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  EXTMEMB3 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  MEMORY_ARRAY (xrw)  : ORIGIN = 0x00000000, LENGTH = 0
}

and sections https://pastebin.ubuntu.com/p/N32zQf9sCm/