1. I've recently acquired a TomTom GO720 from ebay.
2. It came with a Navcore 8.351 with 2 maps, which are Guam (version 705.1481) and North America 2GB (705.1481)
3. Backup was made to the attached Navcore and maps,
4. The internal drive was formatted and cleared flashed.
5. New Navcore 9.520 was copied to a SD
6. The original 705 version Guam and North America maps together with Maps (version 910) were also copied to the same SD
7. Fastactivate.exe with the latest meta.txt was run to patch the Navcore and maps. No errors were given.

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8. Turning on the GO720 with SD card revealed that only the original Guam and NA 2GB maps were usable. Not a single of the v910 maps were allowed to run.
9. I tried to delete the ttgo.bif and let GO720 to generate another ttgo.bif. Steps 7 to 8 were repeated. Guam and NA remained to work while others weren't. So I ruled out the possibility that ttgo.bif is errorneous.
9. It is much appreciated if I can have your enlightenment please.

ah-b Reviewed by ah-b on 28th June 2013. TomTom GO 720 unable to use Navcore 9.520 & 910 maps 1. I've recently acquired a TomTom GO720 from ebay. 2. It came with a Navcore 8.351 with 2 maps, which are Guam (version 705.1481) and North America 2GB (705.1481) 3. Backup was made to the attached Navcore and maps, 4. The internal drive was formatted and cleared flashed. 5. New Navcore 9.520 was copied to a SD 6. The original 705 version Guam and North America maps together with Maps (version 910) were also copied to the same SD 7. Fastactivate.exe with the latest meta.txt was Rating: 5