You cannot physically change the governor or unlock hidden frequency states without root. However, you can trick the system into keeping all cores active at their highest available "user-space" frequency without rooting. That is what the top apps in this niche do.

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Running all cores at maximum clock speed consumes massive amounts of power. Expect your battery percentage to drop much faster than usual. You cannot physically change the governor or unlock

: This tool specifically launches multiple background services to perform intensive SHA1 calculations. To max out your CPU, you should set the number of services to match the total number of cores on your device (e.g., set it to 8 for an octa-core processor). It is available on Google Play CPU GPU Stress Test Benchmark This public link is valid for 7 days