Tsunami Reset problem

[Green_Elite_Cab]

I recently recieved a GP15-1 with sound from Athearn Genesis. It has a tsunami sound decoder in it. I messed up on programming the 4 digit adress, and i was not initially surprised that it didn't work (some decoders are finnicky about that). However, usually i can just set it on a program track and reset the decoder.

The Tsunami decoder however won't reset, neither with CV8 at 8, or CV30 at 2 (both of which are listed as possible reset choices). When i checked online, it says the following-

"Resetting the CVs ... can be quickly reset to their factory default values using the following procedure.

1. Program CV 30 to 2 (or CV 8 to 8) using either Service Mode or Operations Mode
2. Place locomotive on a powered section of track. If locomotive is already on the mainline, cycle power to the decoder by turning power to the track off and then back on.
3. After power is restored to the track there should be no indication of activity other than the power LED turning on for a period of six seconds. If sound comes on imediately upon restoring power, the decoder did not reset. Repeat steps 1 and 2.
4. Once the six-second period has elapsed, the sound should come on and the headlight, backup light and onboard diagnostic light will blink 16 times indicating that the CVs were successfully reset.
5. Tsunami should now respond to short address 3 just as it did when it was first unpacked.
6. If you cannot get the decoder to reset, check to see that it has not been inadvertently locked (see “If You Forget the Lock Code” in the previous section)."

The locomotive ALWAYS starts right back up with the sound, and never resets. I never get past step 2. I know it has not been locked, i haven't even messed with that CV. i've only programmed CV17, CV18, and CV29, and i used the same value for 29 i always use without issue.

I only JUST got this locomotive and its incredibly frustrating that already it doesn't work.