How To Guide [Chinese Version] Install RMX3300 A.19 stock firmware from global

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    Disclaimer: I am not responsible for bricked devices, dead SD cards, etc!

    Warning: I didn't test this procedure, I did backup the images from stock Chinese version before installing global version but I didn't flash it back. Please test at your own risks!

    1. Make sure your bootloader is unlocked
    2. Download the images provided in the link below
    3. Boot your device to recovery (hold volume up and power until reboot)
    4. Wipe data
    5. Boot your device to bootloader (hold volume down and power until reboot)
    6. Connect your device to PC (make sure you have installed fastboot on your PC)
    7. From windows command prompt cd into the folder containing the images
    8. Run the following commands to flash all images

    Code:
    fastboot flash boot boot.img
    fastboot flash dtbo dtbo.img
    fastboot flash engineering_cdt engineering_cdt.img
    fastboot flash metadata metadata.img
    fastboot flash oplusreserve2 oplusreserve2.img
    fastboot flash recovery recovery.img
    fastboot flash splash splash.img
    fastboot flash super super.img       
    fastboot flash vbmeta_system vbmeta_system.img
    fastboot flash vbmeta_vendor vbmeta_vendor.img
    fastboot flash vendor_boot vendor_boot.img
    
    fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
    
    fastboot -w

    When flashing super.img, if you get the message Invalid sparse file format at header magic, this is fine.

    9. You should then be able to boot into system

    Stock RMX3300 Chinese images: https://mega.nz/folder/Ilk2CBwb#VMlU6A8wcFJVU0twOD6vTA
    All Stock RMX3300 Chinese images (slot B was the correct one when it was backed up): https://mega.nz/folder/d1dxEBTa#nzKU4KuhnDcHjK7MX_D2eA
    1
    I followed the steps to the letter. Still stuck in a bootloop :(

    I was stuck in bootloop too when I flashed the global version, try running the last 2 commands or wiping data from recovery then the last 2 commands again.

    Code:
    fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
    
    fastboot -w
    1
    I was stuck in bootloop too when I flashed the global version, try running the last 2 commands or wiping data from recovery then the last 2 commands again.

    Code:
    fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
    
    fastboot -w
    Thanks! that did the trick. Finally running global version (from your other post) on chinese phone.
    1
    Thanks! that did the trick. Finally running global version (from your other post) on chinese phone.
    Great to hear, congrats!
    1