which TomTom for old AIRIS T610 ?

Hi,

I search someone could help me for update my (very) old Pocket pc, I have an Airis T610 with Windows Mobile 5.0 (5.1.195), actually i use Tomtom 6 (7370) from march 2006.....

I would like to update it but which navcore i can use ? with which series of maps ? thx