Install crDroid 11 for Galaxy A21s

Flashing instructions

Pre-installation:

• Must have Android 12 OneUI 4.1 before the install
• Must have an unlocked bootloader
• Recovery (from download page, recovery button)
• Optional gapps (from download page, gapps button)
• Odin3 Download

First time installation (clean flash):

• Remove all Google accounts from your device to avoid FRP (Factory reset protection).
• Backup Data if needed and plug your device into a computer.
• Power off the phone, then enter Download Mode using Volume Down + Volume Up and enter Odin3.
• In Odin3, select the AP slot and input the recovery file (Read the next step before installing).
• After the flash is done, hold Volume Up + Power until in recovery.
• In crDroid recovery, select Factory reset, then Format data/factory reset.
• After it's done, click on advanced, then reboot recovery.
• Back in recovery, click Apply Update, then Apply from ADB.
• Then put this command on your PC and adapt as needed to install the crDroid rom:

adb sideload crdroid.zip

• After it's done, do the same steps to install any additional packages.
• Reboot and enjoy.

Update installation:

• Go to the system updater in the Settings app, and download the new update.
• After the download is done, the update will be installed automatically.
• Reboot.

NOTE: If after OTA, some additional packages you had installed (e.g Magisk) are not there anymore, reflash them in recovery with ADB.

Require support?