Help stuck in SYNC 3 reformat process huge jump from 1.0.15139 to latest

That’s the reformat phase. Do not use a harddisk, just get a proper good and decent USB pendrive like a Sandisk, regenerate the USB pendrive and try again.

The unit won’t be operative until you complete the installation.

We do not support changing regions, but you can read this guide → Current EU Maps Installation on US Imported Vehicles

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