Hallo it is 20002691

That’s an provider router. O2 will not connect this Router to the Network.

This router is door stopper.

Buy a free AVM Router 66xx or 6591.

Ok if i buy used one 6660 is that ok

Yes. But don’t buy a 20002691 it is a provider router. Ask if this is not an old provider router!!

And the 6660 has not the best WLAN. 

This are the Artikel numbers u could buy

• FRITZ!Box 6690 Cable mit AVM Artikelnummer 20002965
• FRITZ!Box 6660 Cable mit AVM Artikelnummer 20002910
• FRITZ!Box 6591 Cable mit AVM Artikelnummer 20002857

Than what is your suggestion,  thanks

6591 or 6690

Ok, now i bought 6660 with 20002910sn, i changed mac address in my profile. What is my next step

Do a factory default reset.

1. Disconnect the Fritzbox from the power supply for at least one minute.
2. Click the Forgot Password (Kennwort vergessen) link.
3. Click on the Restore factory settings button.
4. Here you can assign a new password

Than connect the FRITZ!Box to the cable. Wait until power LED is on.

Connect to the Router LAN / WLAN.

Logon to the Router http://192.168.178.1 and start the setup Prozess. 

https://avm.de/service/freie-routerwahl/fritzbox-am-o2-kabelanschluss-einrichten/

Hi i can not update MAC address trough my o2 site. Can someone help me again to send it privately. Thanks and sorry for bothering you 

4 hours ago you say

Call 0800 5251378 And ask for help.

Do they speak English, and working time please.  Thanks 

4 English support

O2 Service in English 

Our English-speaking postpaid and landline support for you. We are happy to assist you.

089 66 66 30 08 1

Monday till Friday 10 am - 6 pm

Thanks i know about English speaking service but tomorrow is Sunday and i need Internet 

You are able to login to Mein O2?

Than enter the cm-Mac in the web interface.

Yes i am, and i tried to update MAC address  but with no success 

Ok. So you are able to enter the cm-Mac. You save the cm-Mac?

If yes it take some hours to activate could be 4 to 8 hours.

Yes i did and i checked after two hours nothing  changed, even old MAC is there and i have option again to change

Change it again. You have to enter the cm-Mac.

Use the same format as shown.

Dear @Drpop79 ,

in order to help you with your request, I need your customer number and your four-digit personal customer ID/code. I'll write a private message from o2_Support to you.

Kind regards,

Andrea

Dear Andrea,

I already sent you what you've been requested. Thanks

Drazen

Dear @Drpop79 ,

the MAC address you have sent to me belongs to Vodafon. You changed the MAC address eight times by yourself (App). As long as the MAC address ist listed to Vodafone it won’t work.

Kind regards,

Andrea

@Drpop79 than you have to contact the seller. He must call Vodafone to remove the CM-MAC from his account.

This is what i got from guy i bought router

"Also nach Rücksprache mit Vodafone ist sowohl der Vertrag als auch die Mac-Adresse der FRITZ!Box gelöscht. Die FRITZ!Box ist eine freie Box und hat grundsätzlich nichts mit dem Anbieter zu tun. 
Eine weitere Möglichkeit wäre evtl. das zurück setzten bzw. ändern der Mac-Adresse helfen. Dafür solltest du jedoch die Unterstützung vom o2 Support mit verwenden."

And you entered the MAC Adress of the FRITZ!Box with the Artikelnummer 20002910?

You can not change a Mac adress. Vodafone is rejecting the MAC because the address is in use with a Vodafone contract. Now it is on you to solve this problem…

@o2_Andrea bedeutet deine Aussage das es ein VF Router ist oder das die MAC noch mit einem Vertrag verbunden ist?

Yes my fritzbox AN is 2000 2910