To further elaborate, any changes to /system will render updates useless. A custom kernel, having root, etc. You can however flash a stock ROM over your current install and it'll essentially have the same effect as updating.
So what would you suggest - in case of me going to root it and use custom kernel and dalvik, should I go fully custom or at least stick to atock rom and eventualy update it with fastboot?
Sent from my One V using xda app-developers app
I recommend fully customized. You'll have complete control over your device, be able to do things like multi boot ROMs through MultiROM, use the latest GPU drivers and the custom dalvik patches and kernels you are referring to.
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