Unlocking Bootloader, Flashing TWRP recovery and Custom rom on Redmi Note 3

  1. Unlocking Bootloader:
    1. Official method: Go to the developer options (Setting>About phone>7 times taps MIUI version) and enable OEM unlocking and USB debugging. Send request on http://en.miui.com/unlock/ to get permission for unlocking bootloader. After 7-10 days from when you got permission, download Mi Unlock tool on Windows and connect mobile to PC/laptop and click on the unlocking button.
    2. Unofficial method: Flash miui rom from edl mode and after that go to fastboot mode and run fastboot oem unlock-go command. Also, you can check whether the bootloader is unlocked or not by run fastboot oem device-info in fastboot mode.
  2. For more detail:

  3. Flashing TWRP recovery:
    1. Backup your all internal storage data.
    2. Download the latest TWRP recovery (https://dl.twrp.me/kenzo/).
    3. Go to the fastboot mode.
    4. Check device is connected or not. (fastboot devices)
    5. Run command fastboot flash recovery <recovery_path>. This command will flash TWRP recovery on mobile.
    6. Also run fastboot format userdata. This command will actually remove all enycrpted/normal data in the internal storage which TWRP recovery cannot read it.
    7. Then run fastboot boot <recovery_path>. This command boot your device into twrp recovery.
  4. Flashing custom roms:
    1. Download LineageOS (https://download.lineageos.org/) for Redmi note 3 (kenzo) into internal storage.
    2. Boot into TWRP recovery by pressing power button and volume up simultaneously.
    3. Then go to wipe>advanced wipe>select Dalvik/ART Cache, Data and Cache>then Swipe to Wipe.
    4. After that go to Install>select custom rom.zip>then click on Install Image.
    5. Last again Wipe only Dalvik cache and then go to reboot>system reboot.
    6. Done
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