So today I got my new pixel 7 pro and tried to install the Grapheneos and it was all going good until it stopped half way through with and error. I try again and it keeps giving me the same error.

Error: Failed to execute 'transferOut' on 'USBDevice': A transfer error has occurred.

I did not touch my phone, it is here on my desk, is there a way to recover from this, because if I try to restart it, it gives a no command screen that does nothing.

Anyway it seems to do it's thing until it gets to the part of install then give me error.

Thanks in advance.

Try a different USB cable, a different USB port

    Also use chrome browser to do the install

      L8437 It worked, I switched the cable and installed Chrome, so not too sure what worked, I'm going to assume it was the cord. I'm surprised the original cord that came with the phone would not work.

      Anyways thanks again for your time and suggestion. Have a nice day.

      7 months later

      Had the same issue. Changing USB port from USB 2.0 to USB 3.0 did the trick for me