Rootjoy, the Official Custom ROM installer for UMI Smartphones

DOWNLOAD

How to Install Custom ROMs with Rootjoy

Step 1.
Download, unrar and install Rootjoy on a Windows PC if you haven't done it yet, then run it. You might need to disable your antivirus app for the period of the installation process, then set the Rootjoy folder as an exception.

Step 2.
Enable USB debugging on your phone and connect it to a USB port of your PC. - Don't use a USB hub.
For the first time you have to enable on your phone to be accessed by your PC. Check the screen of your device.
WARNING! Updating the ROM of your phone with Rootjoy will erase your user data. To get a perfectly stable system by this update, that's recommended to manually process a factory data reset before installing a new ROM.

Step 3.
Click on the 'Flash' button


Step 4.
If you haven't got a ROM file already downloaded, you'll get the following screen. Click on the 'Download' button and after a few seconds you get a list of downloadable ROMs that fit your specific device.
You need a working internet connection.


Step 5.
Choose a ROM from the list and click on the Download button next to it.


Step 6.
Click on 'Download Manager' at the bottom right corner of the app window. Now you can see as your ROM file is being downloaded.


Step 7.
Click on 'completed', then Flash.


Step 8.
Here you can choose to make a backup of your old installation or skip it. Let's skip it now.


Step 9.
In the next step the Rootjoy recovery will be downloaded, then Rootjoy copies the ROM file to the memory of your phone and installs the Rootjoy recovery.


Step 10.
After finished, your phone boots into recovery and the update process begins. You may close the Rootjoy app now.


Step 11.
Check the screen of your phone. The installation of your custom (or even stock) ROM is starting.
The progress bar can be stuck at 50% for a long time but don't be afraid, the installation process is running smoothly in the background. It can take for up the 10 minutes.


Step 11.
After finishing, your phone automatically reboots into the newly flashed Android system.
No more tasks to do.

For further information and the available products, please check UMI's official website: www.umidigi.com
The official page of Rootjoy is here: http://ift.tt/22mLkKa
I encourage you to join UMI's user community: http://ift.tt/22mLjG6

from xda-developers http://ift.tt/1XP43xE
via IFTTT