If it is working....dont fix what aint broke
However, I have upgraded a few times and am now on 1.1.3.
The file system changed alot after 1.1.2 and all app directories were moved, so......
I had alot of directories/files left from my previous firmware/jailbroken phone (being 1.1.2) that were not used anymore. I went in with SSH and deleted them manually to clean up.