Foxconn A55A Series User Manual page 57

You can see the system is
raising CPU clock until the
system hangs.
Push RESET button on the
front panel of your system to
restart the computer.
Run FOX ONE program
again, it will inform you
the previous test found
that 255MHz is the
recommended CPU clock for
your system.
Click Yes to apply it to your
system.
Now, your system is running
at a CPU clock of 215MHz.
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