Have to put my hands up here, I flat overlooked Xiaomi's MIUI ROM pages when writing this review. If you head over to the MIUI site at http://en.miui.com/download-263.html you'll find a Global version of the Mi4's Android ROM that includes the full Google framework and English versions of most (but not all) the stock apps. Just download the ROM, copy it onto the Mi4 and then launch it using the Update app. That didn't actually work for me, I had to boot the phone intro recovery mode (power/vol up for 5-10 seconds), wipe everything it and then reboot into the new ROM. Once done the new ROM fired up perfectly.