USB 500 Hz patch under XP SP3

Tools for overclocking the USB port from 125 Hz to 500 Hz were typically made for Windows XP SP2. I tried USB Rate Switcher 1.1, which didn’t even attempt to patch the usbport.sys due to it’s different version. Then I tried also special patch for SP3 by, which did patch usbport.sys, but the update rate was still 125 Hz.
Finally the topic 500Hz USB mouse polling in XP SP3 @ Gamers With Jobs contained the answer, good old hexediting in Safe mode was needed.

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