1. Copy recovery-RA-sapphire-v1.7.0H.img to the root of your sdcard 2. Boot into your current custom recovery (boot while holding HOME) 3. Connect your Phone via usb to your pc/mac/... 4. adb shell #mount -a (this can give back an error if you don't have an ext partition, don't worry about it and just proceed) #flash_image recovery /sdcard/recovery-RA-sapphire-v1.7.0H.img