Hello
Now I have downloaded 6-8 different (870.xxx / 880.xxx / 885.xxx etc) maps for my tomtom one 3 "edition, which I have upgraded so it has 1GB of Memory. the last map that I've downloaded is Central_Europe_895_4444 [841MB] OR
Central_Europe_895_4444 with Automatic Installer & Patcher
; Central_Europe v895.4444
3B 19 FA 7C 25 28 A5 87 5E 3E D2 C7 4D FB B3 56 Central_Europe-622.meta

and I just can not get it to work.
the Navicore on the tomtom is 8,010 so it should work.

I delete the old map and install the new one, and it goes fine. with when I start it up, it says that it can not use the map.

what am i doing wrong, the old map is Europe_1GB_North_870_3417 and it works

Is the navcore 8.010 patched ?

It only shows you had no intention to read the provided instructions or the tutorials.
Instead of doing so, you try again and again with no clue at all.
Holyhead pointed you in the right direction, now it up to you to do your homework

toftjannick wrote:Navicore on the tomtom is 8,010 so it should work.

I delete the old map and install the new one, and it goes fine. with when I start it up, it says that it can not use the map.

what am i doing wrong, the old map is Europe_1GB_North_870_3417 and it works

In your old setup, were both the 8.010 navcore & Europe_1GB_North_870_3417 map patched?

If YES, then you have a new map patching issue.
If NO, then you have, at least, a navcore patching issue & possibly a Europe_1GB_North_870_3417 map patching issue also.