Not sure what Forum to post this on but thought I would share my install experience.
1. Got the letter that it was time to upgrade Modem - filled online form.
2. 3 days later got modem.
3. Very hesitant since I had numerous home cameras and cell phones and remember the install fun!
4. Decided the best way to get my camera's and cellphones to "not skip a beat" was to make sure I used the same device name and password. I went into Chat Mode - the associate sent procedures to my email.
5. Didn't use the new coax, etc. Unplugged (power) and removed phone and ethernet cable.
6. Silent prayer - plugged in cables in reverse order.
7. Now, patience is the key here. All lights came on and then went off - nothing but power light.
8. Moved in panic mode - opened browser - entered install URL - nothing - remember - no internet! Patience is the key. The dog wanted to go outside so took him out and when I got back in - browser opened Xfinity install procedure.
9. WindowsXP had me identify network in another window.
10. Seems like took hours (but was only about 10-20 minutes - forgot to look at clock but felt like an hour!) for the modem to boot and go through its process. Activation took a while - key - patience!
11. Changed my WiFi to my old name and password.
11. After about 30 minutes or so - the phone leds came to life and I had phone service.
12. OMG - my camera's came back online and my cell phones connected - didn't have to play that game again.
13. So far - upgrade was exactly as advertised BUT remember - be patient - it doesn't just go boom boom boom and you are back online.
14. Side note - I had to buy an WiFi Extender to reach two of my cameras on the otherside of the house because the supplied modem has almost zero range. BUT - ALL my cameras came online I figured my "WiFi Extender" also recovered nicely. NOT! My Extender was OFFLINE because it requires me to go the manual WPS/Modem route (IP stuff). However, the new modem must have a stronger signal because it is no longer needed! Yes - the new modem actually has some range! I now have a WiFi Extender in the drawer!
Hope this helps others...