Proper Cisco 819 LTE 4G configuration and routing

Hi all,
I have two problems with Cisco 819 LTE 4G router.
(I'm totally new to Cisco)
I set up new user instead of cisco, but after off/on it's gone.
How to properly change/setup user?
I setup the router with below script.
There seems to be no proper route from inside vlan1 and outside cell 0.
After this I can ping, from within the router, and vlan1 address, put I can't ping fw on the inside.
From the fw and computer on fw I can ping the routers vlan1 and cell 0 ip addresses put nothing on the outside.
The cell 0 profile is active if I have the fw connected to vlan1(FE0) with prober ip address.

Please, help me correct the error in setup:
ip int brief
cell 0 lte profile create 1 none

conf t
int cell 0
ip address negotiate
encap slip
dialer in-band
dialer-group 1
ip nat outside
no shut

dialer-list 1 protocol ip permit
ip route cell0

interface vlan1
ip address
ip nat inside

ip access-list extended NAT
permit ip  any

ip nat source list NAT interface cell0 overload
Kjell ForsbergAsked:
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You should use nat command:
# ip nat inside source list NAT interface cell0 overload
instead of command
# ip nat source list NAT interface cell0 overload
since short version is used for NAT configuration when you use NVI0 interface for NAT. If you want use NVI0 for NAT then you should  configure interfaces that participate in NAT with
# ip nat enable

Configure user John with password Smith that will have all administrative privileges on Cisco router
# username John privilege 15 secret Smith

And don't forget command:
# copy run start (copy running-config startup-config) <-- or old version is wr mem (write memory) that Cisco is planning to remove
to save changes to router.

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Kjell ForsbergAuthor Commented:
Hi and Thanks!
The route problem solved with a little word.

But I still have problem with username cisco.
where do I make the new user?
I first go conf t and then username...
But now I have no valid login.
The router still tells me to change from cisco/cisco but that doesn't work any more.
And the user I tried to create does not work.
That should work, and you are in the right place (global configuration mode) to configure user.

You can try to reset router completely and then do it all over again.
Backup your current config, than perform reset router procedure - page 37, and load configuration again, or do it all over again. :)
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