5510 message alert tone unstopable

Hi guys
i've tried to modify 5510 message alert using ppm edit but the tone is unstopable till push 'read messafe'.
Actually i've tried to modify the hex by adding 0B C0 or 46 C0 in the end line or deleted 0A 01, but still the message alert tone ringing unstopable (looks like looping). Anybody can help me please!:(

Make sure that the incoming call alert in your profiles is set to "Ringing"! If it's set to ascending it will continue!!!;)

Sure,i have set it to"ringing", but message alert still ringing unstopable. Anybody can give a solution for me, please?