My opinion if you can get the install of 1.11 to go with out a hitch it is worth the update, the reason I state this is I have two Legends my first Legend was one of the first batch to come to the U.S so it had 1.04 version, my second Legend I purchased to teach my wife how to detect it was originally 1.05 but I had the dealer I purchased it from update it to 1.07 my Legend that came with 1.04 I had nothing but issues with every update, my second Legend which was a 1.05 version I have never had an issue with any of the update process, both my Legends I updated to 1.11 but the one that was originally 1.04 does not run any where close to my Legend that came with 1.05, it is like I am running two different detectors out of the two I have the one that was originally 1.05 runs way better than the one that was originally 1.04, running same settings and same coils they run no where close to each other, I finally gave up and took the one that was originally 1.04 back to 1.09 and it seems to run way better, but I use the one that was originally 1.05 the most out of the two the 1.11 runs really good on it, here is the other thing I purchased the LG24 coil which runs great on my Legend that was originally 1.05 now updated to 1.11, but when I had my Legend that was originally 1.04 updated to 1.11 I could not run the LG24 coil on it at all with 1.09 version on that Legend I have no issues running the LG24, so someone explain that one because it makes absolutely no sense to me