Mi Note Pro With Miui Stabile - Help!

Jan 8, 2016
Hi! I've just received a Mi Note Pro with this strange ROM: MIUI Stabile It's not bad using it but the updater app doesn't work at all...
I've applied for unlocking the bootloader but I've heard that I need to have the China Developer on to do that.
How can I flash it if the Updater app is not working?

Thanks for your kind help