Cannot set cpu to high-performance mode, the change is invalid

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My device is: BESSTAR TECH LIMITED GK41
cpu: Intel(R) Celeron(R) J4125 CPU @ 2.00GHz

echo performance >> /sys/devices/system/cpu/cpufreq/policy0/scaling_governor
echo performance >> /sys/devices/system/cpu/cpufreq/policy1/scaling_governor
echo performance >> /sys/devices/system/cpu/cpufreq/policy2/scaling_governor
echo performance >> /sys/devices/system/cpu/cpufreq/policy3/scaling_governor
echo 2000000 > /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq
echo 2000000 > /sys/devices/system/cpu/cpufreq/policy1/scaling_min_freq
echo 2000000 > /sys/devices/system/cpu/cpufreq/policy2/scaling_min_freq
echo 2000000 > /sys/devices/system/cpu/cpufreq/policy3/scaling_min_freq
echo 2000000 > /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq
echo 2000000 > /sys/devices/system/cpu/cpufreq/policy1/scaling_min_freq
echo 2000000 > /sys/devices/system/cpu/cpufreq/policy2/scaling_min_freq
echo 2000000 > /sys/devices/system/cpu/cpufreq/policy3/scaling_min_freq

After the change, it has been invalid. This cannot guarantee the continuous high-performance mode of my machine, which is very annoying.