Can we flash other country firmware on my wave 1?

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I have Wave 1, S8500. I wonder is it safe to flash other country to my phone? Mine is Malaysia, with Bada 1.0.

I want to upgrade to Bada 1.2 using this S8500DXKF1/S8500OLBKD1,Singapore(Singtel) which can get from here: http://www.sammobile.com/firmware/?p...m=GT-S8500&r=2

And flash it offline using this guide: http://www.tsar3000.com/Joomla/index...w-to&Itemid=84

I hope it's a correct way.
The files from here: http://www.tsar3000.com/Joomla/index...sung&Itemid=82

Seem very confusing. Too many to choose and don't know if it cross country compatible or not.

I'd say yes simply because I'm using non-Philippine firmware on my phone

Firmware's are usually varied by region. I believe this is mainly because of the languages included. For special releases such as those from carriers, it may cause your device to lock on to those carriers. I'm not sure, I've never tried.

Most importantly, since this device is quad-band, you should have no issues with the radio firmware.

If anyone could give me link to XME firmware?