How to flash a Dreambox DM520 HD via a Browser or Telnet

There are two ways to flash a new firmware image onto the DM520 — from a web browser, or via telnet / PuTTY. Both put the receiver into rescue mode first.

Method 1 — Browser

1. Download and extract your image of choice.
2. Power the receiver off using the rocker switch on the rear panel.
3. Power the receiver on and, within half a second, press and hold the power button on the front panel. The button blinks through a colour sequence — blue, purple, then red, then a constant blinking blue. Release it when it starts blinking blue; the receiver is now in rescue mode.
4. Type the IP address of the DM520 into your browser and press Enter.
5. Click the Firmware upload button.
6. Click Browse, find your downloaded / extracted image, double-click it, then press Go!
7. When you see "Finished successfully. You may reboot now", click Click here to reboot.

Method 2 — Telnet / PuTTY

1. Copy and paste each line below into telnet / PuTTY, pressing Enter after each:
   Code

   echo "rescue" >> /proc/stb/fp/boot_mode
   reboot

2. Then follow the Browser method above from step 4 (typing the receiver's IP address into your browser).

📄 Full guide: Download (PDF) · Reference