Cyanlabs does not support changing regions.
Having said so, I’m sure you will find good information on the forums and internet… Read threads like:
- Tutorial: Installation of ROW (NNG) Maps on NA 32GB Sync 3 APIM
- Archive: EU Maps to US Car (3.4 Sync, F9 Maps)
- Tutorial: Current EU Maps Installation on US Imported Vehicles
That should provide enough information for you to get started into the right direction (specially the first one)