This can of worms has re-appeared
Canadian Wave users were left in the dark by their provider, with no updates available.
If you flash with European firmware, you will lose the UTMS frequency.
There have been unconfirmed reports you could flash either Argentina or Venezuela f/w for Bada 2.
You will have to do some research on this.
Wikipedia have a page on MCC frequencies if your interested.
The f/w you currently have is rare, so if you want to flash back to it - find a download source first.
I had all my firmwares (including Canada) stored at MegaUpload - but the Feds/FBI/CIA/RIAA, US Govt took that down.
I'm in NZ, and i support Mr Dotcom. Stupid NZ govt too! - Ooops, going off topic.
Check out those latin American firmwares.