On my 5X+, I got it as an automatic update through Garmin Express for the PC, only updating the GPS version. As far as I know, nobody has got it as an automatic update through Garmin Connect Mobile (separately from a firmware update, I mean).
Sounds to me like quite a mess, since firmware 11.00 is two weeks newer than GPS 2.30 and consequently ought to include the correct GPS version. But perhaps someone at Garmin got confused too about the old GPS version number being higher.
I had a post on some trouble getting the v2.30 firmware. Garmin express never recognized that I needed it. Garmin Webupdater did notice, but the update failed. In the middle of all that mess, I was walking up my stair and the 5x display changed, and said update was available. I took it, and then I had v2.30. So, its my belief that GC mobile finally did it. though I did not do anything specific that I can tell. Agree it could have been handled better.