Does pc sees it now? Cure doesn't boot, it's made to format nuvi.

Quote from kunix's thread:
The typical curing algorithm (in general) looks like this:
1.Flash your device with the CURE firmware (see below for more details). Please note that the CURE firmware will never boot, it can only enter the mass storage mode.
2.Don’t disconnect your device from the PC. It should enter the mass storage mode and the PC should detect it as a new flash drive.
Edit: it seems to me ,even if you got Updater error, nuvi loaded cure, that's why nuvi cant boot.