To perform a downgrade (without paying for third-party tools like "UnlockTool" or "Hydra Tool"), you will rely entirely on open-source software.
It keeps you on your current firmware forever. pico 4 firmware downgrade free
If your PC says "waiting for device," you need to install the correct Android USB drivers on your Windows machine. To help you find the correct files, let me know: To perform a downgrade (without paying for third-party