Quote Originally Posted by ygps View Post
Looks like the file was delete!!
Is the "updater.exe" the same as webupdate that can be downloaded from garmin website?
I just got nuvi 1490T and try to change its OS to enable Thai JCV.
Now I think I have rgn file ready, but don't understand how to flash it with rgn file in pre-boot mode.
Could you pls give more detail on this step?
updater.exe is not webupdater.
The other way to convert your unit without updater.exe is to use RGN_Tool to save your rgn file to a gupdate.gcd file ., remember to override swv to same number both boot and fw_all.
and not forget to delete a gupdate.gcd within .system in your unit.

Place gupdate.gcd in sd card\garmin\gupdate.gcd
turn off unit --> insert card--> turn on unit --> begin flashing.

But I advice you should have updater.exe because you need this tool for recover nuvi if you get in problem ie rebooting.