Hello i have tomtom xl one 32mb RAM i try to get new Europe East 870.xxx map work in my device.
I have SE_Navcore.8.412.1236 wich are suggested in forum, in my device, but tomtom show message"map not found"

So my question what is best memory friendly navcore tomtom xl 32mb and work with map 870.

Please provide download links to:)

If the Navcore works - leave it!
The message you got comes because
a) Navcore is not patched
b) map is not activated correctly
c) map is not installed correctly

I reply that map 870 and navcore 8.412.1236 does not work.
if i put navcore v9 then is device too slow but map work

There is more to a map version than 870.
If you choose a map that is not compatible than it is clear it won't work.
There are maps available for all Navcore versions.