"Get stable fastboot CN JB v14 rom from here
http://en.miui.com/thread-14641-1-1.html"

Downloaded the file, but i couldn't get it installed. It has error.

I guess sometimes it depends on luck. Some got problem, some are not. In order to get a piece of mind, my suggestion is to stick to the stock rom, ignore those updates. Stock rom would be enough for your daily use. I know it sounds silly to not to upgrade the firmware, but at least it saves you from the trouble of getting those bad results. Of course, the downside is you will not be able to enjoy the new features.

What problems ?? I upgrade from V14 to V18 now V22 also didn't face any serious problems, those so call problem maybe for me is not serious problem & can be easily solve by some walk around method, Who says Samsung & Sony no problem, I know many also got hell of of problem after upgrading firmware in their Samsung & Sony including some very serious problem cannot be solved like battery drain & constant hang, my current Samsung Mega 6.3 KK update been halted as too much problem after KK update in some country, some Samsung model I get never get update still run on JB 4.2.1 since launch, My friend Sony also had lots of problem after update.

At lease Xiaomi give 3 major update after less than 3 months ownership, many Samsung model  at similar or doubled the price also never get a single update since launched a year ago.

Well bro, if that's the case, there's a "hardcore" way to disable the OTA function, which is, delete the update apk. But you will need to root the phone first. Just a little suggestion.

http://xiaomi.eu/community/threads/ota-disable.9539/

You need some knowledge to operate a smartphone efficiently, especially Android. If you want less hassle, then should go for Apple. Stock rom normally come with a lot of apps that you may not need it and consume resources and battery. That is why people go for dev rom or root so that you can customise to suite your use.