bootloader dump and APT Burn Tools

[PCBgames]

Hi,
I would like to have a closer look at the bootloader of the displays with the GD32F103 microcontroller. Since I don't really want to cut open my 500C display, I wanted to ask if someone with JTAG access could provide a complete dump of the internal flash.

Is there any description of the UART commands used by the APT Burn Tools to flash the displays?

[AKmatiAK]

send me documentation of gd32f303ret6 chip, I can try to get it's memory, but I have destroyed chip so chances that i do it are small (I destroyed it when programming and replaced with new one)