Cisco 7970 BLF

I have looked all over for info on this. Everything I find appears to be quite dated, and is talking about patching asterisk files, etc.

Most the information I am seeing refers to v1.8 of asterisk. Is this still needed for the newer versions?

Has anyone been able to get BLF working on the 7970?

I have a SPA504g that I was able to make it work great on, but really wanted to replace that with the 7970.

Any help is appreciated.