my own POI's are not visible in the TT Go 730 after installa

I have installed the 915 europ map with success.
It runs fine.

I have also copied the .bmp files, the ov2 files and the ogg files in the root directory of my sd card.

But I do not see any of my own added POIs ?
Why is that ?

Info about my device is :

Navcode : 9,510
Map : Europe V915.5110

THanks for your help.

they were in the wrong directory..
solved.