lincoln mark lt bypass

hey, i got a mark lt 2006 , im trying to program a 555s bypass chip/module and i can seem to get it ,using the regular method 1st key on till antitheft is off then to off position second key same procedure then remotestart with the pellet near the ignition ring, i have tryed almost any positon in the ring with no results , according to this http://www.drdetailshop.com/Transponderreference.htm the mark lt uses type b programing secuence , i tryed too and with no results , anybody has used the 555s on this model with sucess? http://www.drdetailshop.com/555S.htm any ideas guys?

try a crimestopper fd-tb.5 or a bypass kit pku-f2