Tomtom one new edition not working after upgrade map

Hi:
When I upgrade map to USA_Canada_1GB_910_4955 by the Fastactivate. I turn on the GPS, it stay at start screen and no any response. If I use TomTom Home 2 to operation my one, it working fine.
Please help me. Thank you.

ttgo.bif:
DeviceName=TomTom ONE
DeviceVersionHW=ONE
DeviceSerialNumber=E1xxxxxxxxxx
BootLoaderVersion=10012
ApplicationVersionVersionNumber=7903
ApplicationVersion=9183

Map(s):
h:\USA_Canada_1GB_910_4955\

Storage:
Size 962MB, Free 10MB

Remove currentmap.dat or currentlocation.dat from root of TT.
Restart or reboot.

Working within TTH does not mean anything for TT working.

After remove currentmap.dat or currentlocation.dat still not boot
Thanks

Have you tried resetting it? (Sorry for asking an obvious question.)

Or a clean install of the Navcore on an empty TT?

Yes, I did.

I will be try it.
Thanks

The problem is solved after upgrade navcore from 7.903 to 8.010.
Thank you every body.

brucezc wrote:The problem is solved after upgrade navcore from 7.903 to 8.010.
Thank you every body.

Thanx for the update.
Your device may be functional now, but the problem of why it would not boot with 7.903 still exists, because 7.903 is just as compatible with a 910.4955 map, as 8.010 is.