OK, this is wierd:
Have a Nuvi 1490T US version. Downloaded type 5 and extracted img and jvc file, put them on SD card.
Nuvi can use map, navigation works, but sometimes the unit shuts off without warning.
Started to dig deeper, and can get it to do this even in simulation mode! It happens when for example driving from Stills rd onto PIE or Geylang East Central to Paya Lebar Rd.
Then moved the map to .System folder and removed SD card but problem still there.
Checked with MSM and MFM maps and can confirm it's only a problem with this map??
Wonder if there is something special with the Singapore firmware that prevents the map to run on the US version?
Please tell me co-ordinate of start and end point.
I will try on 3790Sg/My.