Install crDroid 10 for Galaxy A20

a20

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Flashing instructions


Prerequisites

  • Your Samsung Galaxy A20
  • This will NOT work on the A20e or A20s
  • USB-C cable that can do data transfer
  • A computer running Windows XP or later
  • A MicroSD card that's at least 2GB

Unlocking bootloader

This WILL factory reset your phone. Back up any data before continuing.

  • Open Settings, and go to About phone -> Software information
  • Tap "Build number" 7 times
  • Go back, then select "Developer options"
  • Enable "OEM unlocking", and press "Enable" on the warning (if the OEM unlocking option doesn't exist, your phone is not unlockable, likely it was purchased from a carrier like Verizon that restricts unlocking so you cannot continue).
  • Turn off the phone
  • Hold down volume down and volume up, and while doing this, plug the phone into your computer.
  • Once the Warning screen appears, let go of all buttons.
  • Hold down volume up until it says "Unlock bootloader?", then press volume up again.

Installing TWRP

You will have to install Odin and the Samsung USB drivers on a computer, which requires Windows XP or later.

  • Turn the phone off
  • Hold down volume down and volume up and plug the phone into your computer.
  • When the Warning screen appears, let go of all buttons.
  • Press volume up to enter download mode.
  • Get twrp-3.7.0_9-0-a20.img.tar from https://twrp.me/samsung/samsunggalaxya20.html.
  • Open Odin, and select the tar file you just downloaded for AP.
  • Go to "Options", and verify "Re-Partition" is unchecked. Having it checked may result in a brick.
  • Press "Start"
  • When it finishes, your phone will reboot back into download mode.
  • Download https://xdaforums.com/attachments/samsung_vbmeta-tar.5065877, select that file for AP, and press start again.
  • When the phone reboots, hold down volume up and power until it boots into TWRP

Installing crDroid

  • Download the latest crDroid build from download page
  • Copy the file to a MicroSD card (ADB sideload doesn't work on some A20's for whatever reason, so it is recommended to use a MicroSD to install crDroid).
  • Insert the SD card into your phone.
  • In TWRP, press "Wipe", then "Advanced Wipe"
  • Select "System", "Data", "Cache", and "Dalvik / ART Cache"
  • Swipe to wipe
  • Go back to TWRP's main menu
  • Press "Install" in TWRP
  • Go to "Select Storage", and pick "Micro SD Card"
  • Select the crDroid zip
  • Swipe to install, and wait several minutes for it to install
  • If wanted, you can also install GApps.

Require support?

For support questions, check out forum or telegram links found on our support page

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