1. Root with Z4
Download Z4 from here http://ifile.it/9m6vo1k/z4root.1.3.0.apk
Do Permanent Root or Temporary Root.
Then the phone will restart.
2. Download ZawGyiPad at http://www.myanmartutorials.com/wp-content/uploads/2010/08/zawgyipad.zip ; and install it.
3. Download soft keyboard at http://www.myanmartutorials.com/wp-content/uploads/2010/08/MyanDroid-Soft-Keyboard-Zawgyi-Beta.zip ; and install it.
4. Install Font Changer application.
Download from here http://www.multiupload.com/910X4G0S0Y
Install the downloaded .apk file to the phone.
5. Download the font files. Download from here http://www.multiupload.com/EJ7NONSLQ6
Unzip and copy all files inside .FontChanger folder.
Paste into .fontchanger folder inside phone's SD (Memory) card.
To see .fontchanger folder u may connect USB cable to computer or use card reader and put SD card to read the data.
If u see the .fontchanger folder on SD card, paste all the copied files.
6. Start the FontChanger application with your phone.
Choose Zawgyi font and it will be replaced and use as system font.
The phone will restart and now u can see myanmar fonts.