The reset thing can be quite tricky to time right, the 60 second time limit is bang on 60 seconds. There isn't a tape in the deck is there?
Turn car on after doing the hack, let the stereo stop making noises etc.
Turn car all the way to position 0 (off)
Hold the tape eject button for exactly 60 seconds, id heavily advise using a stopwatch.
Let go of the button exactly on 60 seconds and turn car to position 1 (ign)
Press"tape" hopefully the display should say Side1 and shouldn't be clicking/making any weird noises.