How to flash Dreambox (clone) DM500S

  • My dreambox clone got stuck in the boot logo and I thought the only way to solve it was flashing it. Unfortunately, I do have an RS232 Male-female cable but recently found a Palmer charger where on one side there's a female rs232 so I was hoping I could cut it and connect it to the other female rs232 cable (cutting the male part) Is that possible? If so, how do I do the wiring?

    If that's not possible would it be if I used ethernet instead? I don't know the IP of the box nor the user pass of it.

    Any help please?