There is some effect: Leaf2 looks dead after inserting this edl cable. No change on screen and no reaction to power button. And I can't see any new devices on PC. Only long press on power button restart device.
I'm rather reluctant to experiment with this rusty cable. I have fond, that there is USB-C version of cable, see here (I'm not sure if I can public links yet):
Code:
https://www.mobilerdx.com/2022/12/how-to-make-qualcomm-modified-type-c-edl-cable-latest-security.html