Iphone: reset root password

If you want to reset the root password of our jailbreaked Iphone and set again the default password (Alpine), you must edit the master.passwd file that is located under the direcoty /private/etc/.

Open the file with a text editor (I use iFile) and look for a line like this:

root:/smxXXXXXXXX:0:0::0:0:System Administrator:/var/root:/bin/sh

and change it to:

root:/smx7MYTQIi2M:0:0::0:0:System Administrator:/var/root:/bin/sh

(attention the password is uppercase sensitive).