The dead robot is your stock recovery screen. You need to hold vol+ and tap pwr at the same time to get into your stock recovery.
When you flash a recovery.img, you need to immediately boot back into the recovery to get the updater script to finish. If you don't boot straight into recovery after flashing, the stock recovery will override the aftermarket recovery. Also, do you have an unlocked bootloader?
Please can you explain step by step how to install a cwm ? (i just unlock the bootloader)
Do i have to root the phone to do that ?
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