Bests & Worsts Reviews from Amazon

I bought the LM877Max to work with my old Liftmaster garage door opener which was manufactured after 1993. The order came as promised and the instructions seemed very clear. I started to program according to the instructions but after I finished the garage door did not open. I tried and tried but still nothing. I went on the internet to see if I missed something. After a futile many hours of searching still could not find the answer. There was no phone number to call for tech support and the only help line I can find is that I have to register on the Liftmaster website to write an email for help. Luckily as soon as I did that, I got an email back with a phone number to call. I immediately call this number and after a whole long pre-recorded spill, I finally got to talk to a person. The technician was very kind and ask me to go to the garage and take me through step by step to program. After a few minutes the door opened and everything worked. The only different between what he told me to do and the instruction which came with the product was this: Instruction #4. Instead of press and hold the "Enter"button until the light bulb flashes, I have to press the ENTER button 4 times. As soon as I did that, the light bulb flashes and the program was accepted. My question is this: Why did they not change the instruction to reflect this new change? I have no idea. I am glad that it works now.