I reckon many people are know this, but I'm starting this thread for ignorant people.
If you want to install custom recovery, you should unlock bootloader but for this you must be root
HOW TO ROOT?
Download framaroot here for the root device. This app can root many device. --->> http://forum.xda-developers.com/apps...-root-t2130276
Download and install it to your phone. After click open. You should select "Install SuperSU" from top section then click "Gandalf". Other section is not working in our devices. After click it, you should look this message "Succes SuperSU installed. Reboot!" if you look this message please restart your phone. Now you are ready for unlock bootloader.
HOW TO UNLOCK BOOTLOADER?
If you are on E610, download E610.zip from attachment and extract E610.bin but if you are on E612, download from attachement E612.zip and extract E612.bin to your internal storage's root directory.
(/mnt/sdcard/ directory). After download "Terminal Emulator" from Google Play Store and open it. Type this commands. Please be careful! If you type wrong, you can brick your device!
su dd if=/sdcard/E610.bin of=/dev/block/mmcblk0p5
su dd if=/sdcard/E612.bin of=/dev/block/mmcblk0p5
SUCCES! You are unlocked your bootloader! Now we can install custom recovery.
HOW TO INSTALL CUSTOM RECOVERY?
Download custom recovery from atachement. What do you want. After put it you internal storage's root directory. (/mnt/sdcard/ directory)
After type this commands: (This is same in both.)
su dd if=/sdcard/cwm-22.214.171.124.img of=/dev/block/mmcblk0p17
FOR TWRP RECOVERY
su dd if=/sdcard/twrp-126.96.36.199.img of=/dev/block/mmcblk0p17
FOR PHILZ TOUCH RECOVERY
su dd if=/sdcard/philz_6.58.7.img of=/dev/block/mmcblk0p17
AND SUCCES! YOU CAN INSTALL ROM-APP-ANYTHING-ZIP FILE FROM YOUR CUSTOM RECOVERY!