(1)  congrats on the new synthetic vision.  Wow!  I am assuming this is way too much for my 520 to handle.  Correct?
(2) do you all have an "upgrade"/ rebuild available to install the internal battery that is now being offered with the new 520?  The smaller 5-inch works best in my plane, so I do not need to upgrade to the 700's.
Many thanks for your help.  I enjoy the iFly 520 a lot more than the Foreflight I have installed on my iPad.  But I am a belt-and-suspenders type of guy while flying  ....
Nelson Amen - - San Antonio, Texas