[Guide] Root Pixel 4a (5G) Android 11 (R)

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ggkameleon

Senior Member
Hi ! I do Factory reset my Pixel 4a 5g and flash February firmware and root it.
But now they had Marsh update I want to update it and keep data.
Do remove magisk or just remove mods is good ? If not how remove magisk please ?

And I use a mac and they had two flash.all a bat and sh I do remove -w on two ?
And on terminal tap ./flash-all ? That right ?
Thanks
 

Homeboy76

Senior Member
Aug 24, 2012
2,502
1,209
Hi ! I do Factory reset my Pixel 4a 5g and flash February firmware and root it.
But now they had Marsh update I want to update it and keep data.
Do remove magisk or just remove mods is good ? If not how remove magisk please ?

And I use a mac and they had two flash.all a bat and sh I do remove -w on two ?
And on terminal tap ./flash-all ? That right ?
Thanks
  1. If you hid Magisk unhide it.
  2. Remove all Magisk Modules
  3. Remove -w from flash-all.sh
  4. Yes
 
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kapsama

Member
Apr 29, 2010
21
3
My Magisk has stopped working recently. I had set it to hidden. Now when I try to open it, keeps prompting me to "upgrade to full magisk manager to finish the setup". I click OK but Magisk never starts.

Is it safe to uninstall Magisk and just reinstall it?
 

Homeboy76

Senior Member
Aug 24, 2012
2,502
1,209
My Magisk has stopped working recently. I had set it to hidden. Now when I try to open it, keeps prompting me to "upgrade to full magisk manager to finish the setup". I click OK but Magisk never starts.

Is it safe to uninstall Magisk and just reinstall it?
Unhide it
 

saturax555

Senior Member
Jan 30, 2011
269
116
Marseille
Hi, I root my phone the usual way at every update by patching boot.img with magisk.
After a clean install of the April update, after flashing the boot_patched.img, I loose data connection : no SIM card detected, and no IMEI. With both stable and canary magisk.
When I restore/uninstall magisk, I loose root but my SIM and my EMEI are back.
Do you have any idea?
Thanks!
 

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    [Guide] Root Pixel 4a (5G) Android 11 (R) Unlock/Lock Bootloader + Systemless ROOT
    Android Security Bulletin—April 2021
    Pixel Update Bulletin—April 2021

    Introduction
    This Guide is for Pixel 4a 5(G) owners that want to Root their phone, and enjoy the benefits of rooting it without installing a Custom ROM. However, for those that just can't live without a Custom ROM, take a look at 'Custom ROMs for Pixel 4a 5(G)'.

    New

    Update(s)
    1. Factory/OTA Images - 04/05
    2. Magisk Stable - Magisk-22.1 04/09
    3. Magisk Beta - Magisk-22.1 04/09
    4. Magisk Canary - Magisk-221xx
    5. TWRP - Waiting for T.R.W.P. for Android 11 (R)
    6. SafetyNet - SafetyNetFix v1.1.1 01/16
    7. SDK Platform-tools - r31.0.1 04/05
    8. Custom Kernels
      • Proton Kernel v1.1 01/07
      • CleanSlate R v1.7.5 02/11
      • Zest Kernel ꜰᴏʀ ʙʀᴀᴍʙʟᴇ 02/21
    9. Custom ROMs
      • ProtonAOSP v11.3.3 03/04
      • UNOFFICIAL LineageOS v18.1-microG 02/07
      • [ROM][OFFICIAL][bramble] LineageOS 18.1 - Nightly

    Disclaimer
    1. I assume no responsibility for the malfunctioning/bricking of your phone.
    2. The order of listed items i.e., Custom Kernels, Custom ROMS, etc. Does not indicate my preference for them. It is your responsibility to do the research before selecting an item.

    Prerequisites
    1. A Pixel 4a 5(G) phone with an unlocked bootloader.
    2. The latest Android 11 (R) Factory or OTA Image: "bramble" for Pixel 4a 5(G)
    3. Factory Image
    4. OTA Image
    5. Computer - With the latest SDK Platform-Tools: r31.0.1 installed.
      • Important: Update Platform Tools, regularly, for optimal performance.

    Other Guides
    [Guide] Pixel 5 Android 11 (R)

    Credits/Thanks/Recognitions
    1. @topjohnwu - Magisk Canary
    2. Those I may have, inadvertently, forgotten.

    [Index
    (NOTE: Numbers 1-11 are not steps, they are individual sets of instructions).
    1. Open a Command Prompt/Boot Fastboot Mode/Boot Recovery

      • Open Command Prompt on Computer
        1. Option 1 - Open File Explorer, click the platform-tools folder, press shift, right click, and select open command prompt here.
        2. Option 2 - Open File Explorer, click the platform-tools folder, highlight the directory information in the address bar or click the folder (left side of address bar) to highlight it type cmd and press enter.
          Notes:
      • Boot fastboot mode:
        • Power off phone, press and hold the power and volume down buttons until you see Start.
      • Boot Recovery
        • Power off phone, press and hold the power and volume down buttons until you see Start. Use volume up/down button until you see Recovery mode. Press power button.
    2. Test fastboot

      • Enable Developer Options - Tap Settings > About phone > Build number 7 times or until you should see 'you are a Developer'.
      • Enable USB Debugging - Tap Settings > System > Advanced > Developer options >
        Enable USB Debugging.
      • Open a Command Prompt on your computer in the Platform-tools folder.
      • Boot fastboot mode on your phone (#1)
      • Connect the phone to the Computer.
      • At the prompt type: fastboot devices to verify communication with phone. It should return your phone's serial number.
    3. Unlock Bootloader/Return Phone to Stock/Lock Bootloader

      • Unlock Bootloader

        1. This will erase all user data from the device!
        2. Backup your data
        3. Activate Developer Options: Tap Settings > About Phone > Tap Build Number 7 times or until you see you are a Developer. Tap back > System > Advanced > Developer Options. Enable OEM Unlock and, USB Debugging.
        4. Boot fastboot mode
        5. Connect the phone to the Computer with USB cord.
        6. Open a Command Prompt on your computer and type fastboot flashing unlock and press enter.
        7. You should see a request for confirmation on your phone, use the volume keys to scroll and the power key to select.
        8. Allow the process to complete and then type fastboot reboot at the Command Prompt and press enter.
        9. When your phone reboots disconnect your usb cable.
          Notes: After unlocking your bootloader, you'll see a warning: You will see this warning until, you relock the bootloader.
          Do not relock your bootloader until you have returned the device to Stock..
      • Return Phone to Stock

        1. Backup your data/Internal storage
        2. Settings > System > Advanced > Reset Options > Erase all data (factory reset)
        3. Log in
        4. Set up phone
      • Lock Bootloader

        1. Return the phone to Stock before locking the bootloader, failure to do so could brick your phone
        2. This will erase all user data from the device!
        3. Boot fastboot mode
        4. Open a Command Prompt and type this at the Prompt: fastboot flashing lock
        5. You should see a request for confirmation on your phone, use the volume keys to scroll and the power key to select.
        6. Allow the process to complete, then type this at the Command Prompt: fastboot reboot
        7. Enable Developer Options: Settings > About phone > Tap Build number 7 times or until you see 'you are a developer'.
        8. Tap Back > Developer options and toggle OEM Unlock off.
    4. Install/Update Factory Image keep or wipe data

      • Important Note(s):
        1. When doing a major upgrade i.e., Android 10 (Q) to Android 11 (R): I recommend doing a clean install. What is a clean install?
          • Doing a Factory reset prior to installing, major, update.
          • Using flash-all.bat file without removing the -w.
        2. Always verify you have the latest version of SDK Platform-Tools installed on your computer before installing the Factory Image: Pixel 4a 5(G) - bramble.
        3. If your phone was rooted, and you want to 'Keep Data'. Do this first unhide Magisk App (if you hid it) then Uninstall Magisk prior flashing the Factory image. Why? The changes in the Factory image may cause Magisk modules to fail. This will cause boot loops.
        4. If you get an error: while flashing, try one of these options:
          • Change the USB port to a non charging USB port.
          • Change the USB cord to one that doesn't have the blue color head.
          • Change Computers.
      • Backup your data
      • Download the latest Factory Image: Pixel 5 - bramble to your Computer.
      • Extract the factory Image to a folder.
      • Flash Factory Image Keep Data

        • Open the folder you extracted the Factory Image to and Edit the flash-all.bat file with a file editor i.e., Notepad. Remove the -w from this command: fastboot -w update image-bramble-aa9a.999999.999.zip
          Note: If you do not remove the -w your data and internal storage will be wiped.
        • After, you have edited the flash-all.bat file. Copy/Move these files to the Platform-tools folder:
          1. bootloader-bramble-....img
          2. flash-all.bat
          3. image-bramble-....zip
          4. radio-bramble-....img
        • Open a Command Prompt on your computer in the Platform-tools and type: flash-all at the Command Prompt and press enter.
        • System will reboot when flashing is complete.
        • Do #7 to root/reroot.
      • Flash Factory Image Wipe Data

        • This will wipe your phones Internal Storage.
        • Open the folder you extracted the Factory Image to and Copy/Move these files to the Platform-tools folder:
          1. bootloader-bramble-....img
          2. flash-all.bat
          3. image-bramble-....zip
          4. radio-bramble-....img
        • Open a Command Prompt on your computer in the Platform-tools folder and type: flash-all at the Command Prompt and press enter.
        • The phone will reboot when flashing is complete.
        • Do #7 to root/reroot.
    5. ADB Sideload

    6. Extract/Flash boot.img

      • Extract boot.img

        1. Download the latest Factory image to your phone.
        2. Extract the Factory Image file (bramble-r2d1a.999999.999-factory-99a9a99a.zip) to a folder.
        3. Open the folder and, extract the Image file (image-bramble-aa9a.999999.999.zip) into the folder.
      • Flash boot.img

        1. Flashing the boot.img removes root.
        2. Open the folder you extracted the 'image...zip' file to and copy the boot.img file to your computer's platform-tools folder or to the folder that has fastboot.exe in it.
        3. Boot fastboot mode
        4. Connect the phone to the Computer
        5. Open a Command Prompt and type the following command at the prompt:
          fastboot flash boot --slot all boot.img
        6. Reboot
    7. Root/Reroot with Magisk and Pass SafetyNet.

      • Important Note(s):
        1. When doing a major upgrade i.e., Android 10 (Q) to Android 11 (R): I recommend doing a clean install. What is a clean install?
          • Doing a Factory reset prior to installing, major, update.
          • Using flash-all.bat file without removing the -w.
        2. If your phone was rooted Do this first unhide Magisk App (if you hid it) then Uninstall Magisk - Restore Images. Why? The changes in the Factory image may cause Magisk modules to fail. This will cause boot loops.
      • Download files:

        1. Magisk App - Download to your phone
        2. Custom kernels - Download to your phone - install with Kernel Manager
        3. Kernel Manager - Download to your phone
      • Patching the boot.img

        1. Do #6 - Extract boot.img
        2. Install Magisk (Beta, Canary or Stable) App
        3. Open Magisk App
        4. Depending on the version of Magisk App installed: Set the Update Channel to Beta, Canary or Stable.
        5. Tap Install (next to Magisk)
        6. Tap, Select and Patch a File
        7. Select the boot.img file you extracted from the latest factory image.
        8. Tap the ✓ (Check Mark)
        9. Tap Let's Go
        10. When you see done, the boot.img has been patched (magisk_patched_xxxxxx.img), and stored in the download folder.
        11. Reboot
        12. Copy the patched boot.img file to your computer's Platform-tools folder or the folder that has fastboot.exe in it.
        13. Boot fastboot mode
        14. Connect the phone to the Computer with USB cord.
        15. Open a Command Prompt in the folder you copied the patched boot.img to.
        16. Type fastboot flash boot "name of patched boot".img without the quote marks at the Prompt and press enter.
        17. Type fastboot reboot at the Prompt and press enter.
        18. Important Notes: If your phone boot loops try one of the following options:
          • Flash the 'stock' boot.img to both slots: fastboot flash boot boot.img --slot all
          • Boot Safe Mode - Press Power Off button ==> Press Power Off until you see boot Safe Mode ==> Press Ok.
      • Pass SafetyNet: MAGISK MODULE ❯ Universal SafetyNet Fix 1.1.0

        1. Download SafetyNetFix from the link above.
        2. Open Magisk Manager
          • Tap Modules icon.
          • Tap Install from storage
          • navigate to the SafetyNetFix file
          • Hightlight the file (tap it)
          • Tap the check mark (✓) to start the installation.
          • After it installs tap the Save icon to save the log
          • Tap Reboot.
        3. Open Magisk Manager
          • Tap the Setup icon.
          • Scroll down to Magisk - MagiskHide and enable it.
          • Tap back arrow => tap Superuser icon => tap MagiskHide => Scroll to the bottom of the page => Tap Search icon => Tap Show system apps (Under Filters) => check (✓): Google play services (com.google.android.gms).
          • Close Magisk Manager.
        4. Open Settings
          • Tap Apps & notifications
          • Tap see all 999 apps
          • Tap the three dot menu
          • Tap Show system
          • Scroll down to Google Play Store
          • Tap it
          • Tap Storage & cache
          • Tap Clear cache
          • Tap Clear storage
          • Exit settings
          • reboot
        5. Open Google Play Store app
          • Tap Menu
          • Tap Settings
          • Scroll down to Play protect certification
          • check for Device certification.
    8. Set Magisk App Update Chanel/Update Magisk

      • Set Magisk App Update Chanel

        • Open Magisk App > Tap Settings icon > Update Channel > Select Stable, Beta, Canary or Custom.
      • Update Magisk

        1. When Magisk App notifies you of an update:
        2. Tap install.
        3. Select, Direct Install (Recommended)
        4. When it finishes installing
        5. Tap, Save Log
        6. Log location: /storage/emulated/0/Download
        7. Tap, Reboot
        8. Done!
    9. Custom ROMs

    10. Apps/Mods/Scripts/Tethering/Themes
    11. T.W.R.P. Backup/Restore

      • Waiting for Android 11 (R) T.W.R.P.
    2
    Thanks for the write-up. Just got one of these as I dropped my old phone, and I was due anyways. So question regarding Safetynet. I went ahead and went with the latest Feb factory image, patched the boot and rooted with Magisk, then tried the safety net and attestation fails. Anybody have the feb patch and passing safetynet? if so what was the sequence you used? thanks
    - Root with Magisk patched img
    - Open Magisk Manager install SafetyNet module
    - Reboot
    - Open Magisk Manager Enable Magisk hide
    - Hide Google Play store, Google pay, etc
    - Clear cache and storage for the above apps
    - Reboot
    1
    Great work, AGAIN!!
    1
    Thanks for the write-up. Just got one of these as I dropped my old phone, and I was due anyways. So question regarding Safetynet. I went ahead and went with the latest Feb factory image, patched the boot and rooted with Magisk, then tried the safety net and attestation fails. Anybody have the feb patch and passing safetynet? if so what was the sequence you used? thanks

    You need Universal Safetynet fix v 1.1.1 Magisk module.
    1
    Hi ! I do Factory reset my Pixel 4a 5g and flash February firmware and root it.
    But now they had Marsh update I want to update it and keep data.
    Do remove magisk or just remove mods is good ? If not how remove magisk please ?

    And I use a mac and they had two flash.all a bat and sh I do remove -w on two ?
    And on terminal tap ./flash-all ? That right ?
    Thanks
    1. If you hid Magisk unhide it.
    2. Remove all Magisk Modules
    3. Remove -w from flash-all.sh
    4. Yes
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