Here an one-click application to install Superuser and su binary on phone. Look at the compatibility list here to see if this application can be useful for you.
Feedbacks on supported devices will be greatly appreciated in order to update the compatibility list. Post your feedback here
Superuser and su binary include in application work from android 2 to 4.
!! Important !!
Success with this application void warranty on your device.
If you need help, read the FAQ first before posting your question in the help thread
If you like my work, you can buy Framaroot donation app
Many many thanks to all donors
Download it on your device (links are available at the end of this post)
Install it with a file explorer or directly from your internet browser, if android warn you about security risk, say OK and check Unknown sources to allow install of applications outside of Play Store.
Open Framaroot and select one of the following action: Install SuperSU, Unroot or Execute script (for advanced users)
Possible case once application is launched
A popup saying "Your device seems not vulnerable to exploit included in Framaroot", in this case you can uninstall app
You seeing one or more exploit name, also click on one after you have selected an action and you will see one of the above messages
Possible case once exploit is selected
"Success ... Superuser and su binary installed. You have to reboot your device"
"Failed ... Exploit work but installation of Superuser and su binary have failed"
"Half-Success :-/ ... system partition is read-only, use local.prop trick. Reboot your device and use adb to see if it run as root", happen when the filesystem in use on system partition is a read only filesystem (ex: squashfs)
"Failed ... Try another exploit if available"
Framaroot crash or freeze, in this case relaunch Framaroot a second time and select the same action and exploit