For Final solution steps
1;first Root your phone i recomend to use iroot
2:install CWM
Method to Install CWM
First Download recovery.img(CWM) or recovery.img(TWRP)and Flashify from GooglePlay
Place the downloaded recovery.img to external sd card
Open Flashify and tap on Recovery Img
Tap on "Choose a file"
Tap on "File explorer"
locate the recovery.img that you have placed into your sd card and flash it.
Wait for a while and reboot your phone
Now search and download the FLASH ROM for your mobile model
place it in your sd card
Restart your phone in recovery mode
Select the installed from sd card
select the location where you have placed the Rom
and then yes to confirm
and wait for Rom installation.