Go to a trusted portal (like GPSPower). Download "iGO_NextGen_9.18.27.736574 – Patched – No License Required."

Some of the notable patches and enhancements included:

Post your sys.txt power section below, and I’ll help you optimize it for your specific head unit. Also, if anyone has a working "deep sleep" patch for Rockchip PX6 units, please share.