you try the russian y511-u30... it's very functional... though it might be for dual-sim y511, it functions just as good, if not much better.
i am not able to put the link because i am prevented by the admin to post it... just google "huawei y511-u30 flash firmware"...
Hey you are right, the Russian upgrade works! I went to huaweidevice russia, searched Y511, downloaded the firmware, put it in dload folder in the SD card and used the SD card upgrade that is in the settings of the phone, thats all. Phone upgraded and no more chinese apps!