How to flash a D-link DES-3200-28 switch?

Question

Command line

Good day!
Please help me flash the dead D-link DES-3200-28 switch
from what is available, there is a console cable and an rs-232 - USB converter, that is, I can connect to it via the console, I have WIN10 OS, I use putty to connect, I see this :

Conclusion

in putty as he asked for exhibited 115200

settings

up to this point, the switches have never been flashed, so do not swear much if something is wrong.
The real question is what can be done about it?

Answer 1

Reboot the switch, and click when connecting shift + f6. It will appear, so to speak, the boot (recovery) menu of the switch, through it and pour the firmware.