Step 1. Format the Micro SD card (This operation is optional).
Step 2. Copy the Software: main package UPDATE.APP to a directory named dload.
Step 3. Copy the entire dload folder (with UPDATE.APP in it) to the root directory of the Micro SD card. Check if the whole file list in sdcard,
Insert the Micro SD card into the handset and power on. After entering call -> enter:*#*#2846579#*#* -> ProjectMenu -> Software Upgrade -> SDCard Upgrade-> OK.