ways to change password of the root or mobile account of ur jailbreak ios device

ios - ssh - password.txt

#if u have the root password which default is "alpine"
1.login as root, using command "ssh root@ip address"
2.type ur password: alpine
3.type command "passwd" to change ur root password
4.when it is done, type command "passwd mobile" to change the mobile passwd

#if u forget ur root passwd
1.open the file named "master.password" at /private/etc on ur jailbreak ios device
2.find the string like this:
root:xxxxxxxxxxxxx:0:0::0:0:System Administrator:/var/root:/bin/sh
mobile:xxxxxxxxxxxxx:501:501::0:0:Mobile User:/var/mobile:/bin/sh
3.change the string "xxxxxxxxxxxxx" to "/smx7MYTQIi2M" and ur root or mobile password is reset to "alpine"

#if u want to login ur jailbreak ios device through ssh without password, follow following steps:
1.run command "ssh-keygen" on ur mac, press "enter" three times, and u will get 2 documents at "ur user profile/.ssh/"
2.run command "ssh-keygen" on ur jailbreak ios device, and u will get 2 document at "var/root/.ssh/"
3.copy id_ras.pub from ur mac to ios device:"var/root/.ssh/"
4.rename "id_ras.pub" to "authorized_keys"
5.now u can login ur ios without password: ssh root@192.168.X.X

I cand acces the file any fix?

even after u change the master.passwd and Permitrootlogin to yes its not working?

So is there any way to reset it to its default?