Thread: ZTE ZXDSL 831 AII not working after firmware upgrade

I recently upgraded the firmware of my ZTE ZXDSL 831 AII modem. Immediately after that modem stopped working in PPoE mode and Windows gave error code 651. Though when i changed the PPoE to bridge mode in Internet configuration it started working. Any idea where it went wrong??

Are you using Windows 7 OS ?
Creat new network connection for "Always On" PPPoE mode.

check this blog. confirm menu pages appear similar.
http://foribb.blogspot.com/2008/05/c...-in-pppoe.html
If not try to post Device info page screen shot.

Originally Posted by yashoshah

I recently upgraded the firmware of my ZTE ZXDSL 831 AII modem. Immediately after that modem stopped working in PPoE mode and Windows gave error code 651. Though when i changed the PPoE to bridge mode in Internet configuration it started working. Any idea where it went wrong??

are you selecting "enable NAT" and "default route" while config your modem to PPPOE mode..?? if not, do so.

"enable NAT" and "default route" is checked, but still the same problem. The Opearting system is Windows 7

Originally Posted by yashoshah

"enable NAT" and "default route" is checked, but still the same problem. The Opearting system is Windows 7

is it so that after every power on (or reboot to save settings in PPPOE mode) of your modem, it gets to factory reset...when in PPPOE mode but works fine when config to bridge mode????

once i faced the same issue with same modem, i got it rectified after fresh OS and LAN drivers installation.

to find this out, try your modem in pppoe mode on your friend's pc with his username and password and if it works fine there, then get ur pc a fresh install of OS and lan drivers.

Ok- will try at frnds PC.
Can u provide some basics (or some link) that one should now about the Modems in order to troubleshoot at his/her own.

ZXDSL 831AII Firmware flashed
PROBLEM: PPPoE mode does not work.
l Confirm you can connect to Internet in Dialer Mode.

Though when i changed the PPoE to bridge mode in Internet configuration it started working.

Post as attachment screen shot of Device Info.
or copy/paste like this:
Device Info

Board ID: 96338L-2M-8M
Software Version: 3.12L.01.A2pB023k.d20k_rc2
Bootloader (CFE) Version: 1.0.37-0.7

Code:

IF IT WORKS  DON'T  REPAIR !!!

Wait...
Have you created a new Network for PPPoE mode In windows 7?

Yes- I created new network in PPoE mode. Still doesn't work-Windows return the error-651.

Connect in Bridge mode-- OK (Internet configuration page thumbnail--Last entry edited to Bridged mode)

What is Dialer mode??

As for other info--

Device Info

Board ID:
Software Version:
Bootloader (CFE) Version:

where to find it??
In modem configuration at 192.168.1.1, these are not available

Bridge mode config in Internet configuration

What is Dialer mode??

Presume you use above to create . a "bridge" to Your ISP !!!!!

Device info not needed.

Type in SEARCH Box above "error 651 in Windows 7" for old threads.

SOLVED::

It's working in PPPoE (Always ON) mode. I was using dialer in PPPoE mode which returned the error 651. Though there was no need to use the dialer, it was already working without dialer. The dialer is for Bridge mode..

LESSON LEARNT

THANKS

Congrats..
Thanks for feedback.
Check your USER CP.

Rep 24 +++ for feedback

for future use/ref:
http://foribb.blogspot.com/2010/09/z...-firmware.html

Thanks essbebe:

BTW can u tell me the difference between using PPPoE and bridge mode and which mode is better?

Is there any stuff available on our forum regarding above?

In "Bridged" mode all ports are open. ( Use Antivirus Firewall applications)
Preferred for auto scheduling NU auto downloads 0200AM to 0800AM.
Control misuse, by restricting access to all.


In PPPoE mode, when we need H24 connectivity, modem is always connected. ( also have AV And Firewall in use )
( for instance my VOIP phone is always connected in this mode . computer can be switched off )
Special facility to Portforward to specific web sites. for faster download/s.
Hosting your own webserver/website.

When we use more than one system PPPoE mode with DHCP enabled is required.( example another laptop cellphone etc )