we had it before.
if you flash you override something. and that is lost.

if you flash the kernel, the old kernel is lost.

if you flash the firmware: the firmware is lost(that is part of the software) with the firmware you also flash the kernel. (your settings dont work for the underlying is gone)

if you flash emmc: all your settings are gone and you can't do it without flashing the firmware as well.


clarified?