RE: My Umi X2 is bricked
As a bricked your smart phone you have only a few options left with you, the first and then recommended option is to take it to the service center and pay some money for repairing your bricked your smart phone.
The second option is to install your operating system on a mobile phone by booting it up in the recovery mode and then upgrading its ROM. You may find your mobile's custom ROM on the internet easily. You can boot up in recovery by pressing the lock button and volume up button simultaneously at the same time.