Just got U-verse installed by the "Death Star" after leaving DirecTV. Couldn't find anything on the remote that matched AT&T or Cisco (the dVR box) that worked. Having trouble "learning", only get the power button to work. Everything else isn't working. Any ideas?

Try using Codeset 151

No good. It's the only codeset that shows up for aT&T. Updated my remote and still nothing. Cisco had a few new codesets, but they didn't work either.

Do you have a model number for the box?

You can also try 156 and 177. They are a couple of the newer codesets for Cisco boxes.

Tried the other Cisco codes, no luck. Box model is ISB7500.

Okay, In IR mode the remote works great so code 151 is money. However, i'm using a MRF-350 and for some reason on the power on button is received. Otherwise no signal flashes on the MRF-350 when any other button on the MX-450 is pushed.
Even made sure the RF was working.

Do you have the uverse box setup for rf on the remote? Is the RF ID set correctly? Are the IR ports assigned? Also make sure the emitter wires and the antenna are properly seated all the way into the MRF350. Also make sure the antenna is not near any equipment. You can test for rf interference by placing the mrf350 RF ID to 0 and moving the antenna around. If the rf light comes on, you have interference present.

Changed the RF ID to 2 and did the same with the remote after checking the ir ports, and emmiter wires. That did the trick.
Need to start simple, as it seems that works a lot of times.
Thanks everyone.
Now I just have to reprogram my macros!!!

Hey, everyone is me :-D

Your welcome. Glad its working now.