NEX5-NEX3 firmware research

Hi,
in an article showcasing the new FS100
http://www.eoshd.com/content/584-Sony-FS100-a-kick-up-the-arse
there's a sentence where they state that
Peering into a £400 NEX mirrorless, Vitaliy Kiselev found rather old hardware, plenty of cost cutting but a great new sensor. Sony then took this dime-store circuitry and lovely new sensor, and put it in a larger case with a VG10 sticker. Vitaliy's inspections here reveals the difference of a single chip on the circuit board, everything else is the same. Even the firmware and user interface is just marginally changed. Manual controls are enabled with a single line of code, implying they are disabled on the NEX mirrorless on purpose.

Is it true? a single line of code?
How we know it if code is cripted?
 
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