Kod:
You will need putty (or HyperTerminal) as well a null modem cable
 
- connect your dm with a serial/null cable to pc with power off
- connect putty and use serial option (change serial port speed in putty to 115200) to connect to your dm and hit open
-If using Hyperterminal set com port properties to: Bits per   Second=115200 ;Data bits=8 ;Parity=none ;Stop bits=1 ; Flow control   =Xon/Xoff
- turn on dm and you will see a few messages during boot process
 
Dreambox DM500
loaded at: 00500000 0060016C
avail ram: 00501000 02000000
 
- hit control x repeatedly until the boot 
at the following prompt...
 
Linux/PPC load:
 
type (of course without quotes "")
 
"console=null root=/dev/mtdblock5 rootfstype=squashfs ro console=ttyS0,115200 single"
 
and press enter
 
at this point I received the error [Can't open /proc/bus/dbox.sh] but just ignore it.
 
once you are at the bash level ( / #) type
 
"mount -t jffs2 /dev/mtdblock/1 /var" 
 
and press enter
 
now type passwd
-----------------------you should see the following screen---------------
Changing password for root
Enter the new password (minimum of 5, maximum of 8 characters)
Please use a combination of upper and lower case letters and numbers.
Enter new password:
Re-enter new password:
passwd[19]: password for `root' changed by user `root'
Password changed.