I got my motherboard changed and im running guerilla nos rom again so i'd say its safe :) atleast it worked on me got my motherboard changed when my charger plug was damaged
You get this while the installer verifies your device am i right? and before error7 it says "assert failed: getprop..."? Then you probably just have incorrect cwm version. email me with title "padfone 2 cmw help request / error7" and ill help you out :)
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