sorry to annoy ,mate.
but i really need this help.so,thank you very much.
yeah i have seen those,but didn't understand what to do.
now as you said 'flashing a custom ROM"
i have searched for flashing , ROM and root as they seem to be the Key words for my case,but....
can some one make a little clarification for me?if it is not much to ask for!
Not a problem.
When you get an Android device the operating system is installed and configured for that device. It is designed to allow you to do many things but restricts access tot he system files to keep inexperienced users from rendering it inoperable and for malicious software to be able to alter the system. (There are more reasons, but those are the basics.)
When you gain root access, it is gaining administrative privileges over the entire file system. At that point you can do anything you want.
Flashing a custom rom is replacing the device's operating system with another that has been packaged into a "read only memory" (rom) file. Flashing refers to overwriting the device's system memory, usually with a utility like ClockWork Recovery.
Every device has a procedure to put it into a mode where files can be written to it while the OS is not running, thus being able to replace one OS for another.
The procedure usually goes something like this:
1. Download some files to a computer and copy them to a SD card. You may be required to create a special bootable SD card using a utility that put a complete partition image on removable storage like
WinImage
2. Put the SD card in the device and boot the device into recovery mode by holding down a special key combination while pressing the power button.
3. Apply the downloaded files to the device using the menu of the recovery program.
That is usually enough to get a device updated.
As to what the procedure is for your specific device and which custom packaged OS will work with it, you'll have to check with those who have already done it (as provided in the links)
