Ask in the thread, or in Q&A, don't clog up the general with these simple question threads. But yes, follow the tutorials (Pro-tip: Use the search function! It's super useful!) for flashtool and flash any ftf from any region, some have different apps pre-installed etc. you can use them from any region. I bought a UK sim-free Xperia Z and I've flashed Taiwanese, German and Belgian ftf's.
Sony Xperia Z - 4.4.2 rooted, de-odexed, zipaligned