I downloaded a map which should work (compatibility chart) but tt says it doesn't
here the info about my device:

ttgo.bif:
DeviceName=TomTom XL
DeviceVersionHW=ONE XL (v9)
DeviceSerialNumber=RCxxxxxxxxxx
BootLoaderVersion=55026
ApplicationVersionVersionNumber=8017
ApplicationVersion=9381
CurrentMap=Western_and_Central_Europe_2GB
CurrentMapVersion=815.2034

Map(s):
G:\Western_and_Central_Europe_2GB\

Storage:
Size 1957MB, Free 647MB

petervdd wrote:I downloaded a map which should work (compatibility chart) but tt says it doesn't
here the info about my device:

ttgo.bif:
DeviceName=TomTom XL
DeviceVersionHW=ONE XL (v9)
DeviceSerialNumber=RCxxxxxxxxxx
BootLoaderVersion=55026
ApplicationVersionVersionNumber=8017
ApplicationVersion=9381
CurrentMap=Western_and_Central_Europe_2GB
CurrentMapVersion=815.2034

Map(s):
G:\Western_and_Central_Europe_2GB\

Storage:
Size 1957MB, Free 647MB

Which map did you downloaded.
And read carefully
viewtopic.php?f=80&t=19485

I have now 885.4058 map which is too old
navcore 8017 patched:
ttgo.bif:
DeviceName=TomTom XL
DeviceVersionHW=ONE XL (v9)
DeviceSerialNumber=RCxxxxxxxxxx
BootLoaderVersion=55026
ApplicationVersionVersionNumber=8017
ApplicationVersion=9381
CurrentMap=Western_Europe_1GB_885_4058
CurrentMapVersion=885.4058

Map(s):
G:\Western_Europe_1GB_885_4058\

Storage:
Size 1957MB, Free 763MB

You said: I downloaded a map which should work (compatibility chart) but tt says it doesn't
here the info about my device:
I still don,t know wich map you downloaded example i.e Benelux 1020_9244