Zyon

I have a 2004 GS430 that I’ve had for awhile and I’ve been currently working/ doing maintenance on. I’ve recently changed my knock sensors and when I was completed I ran into a “ crank no start issue “ I’ve went through the car completely just to find to be told I’ve somehow triggered the immobilizer, the only videos i could find was the “ paper clip and let it sit for 30 mins “ bypass but it has not worked and the only other video I could find was somebody cutting the immobilizer wire on the ecu but gave no details or any verbal instructions. Do I need to get a new ecu and then do the bypass again?, or is there another way to solve this problem