OnePlus 9

Prerequisites

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The firmware for this device is included with the ROM.

• Latest Platform Tools
• Developer settings and USB debugging enabled (Instructions)
• Required Images: boot.img, dtbo.img, vendor_boot.img (Download here)
• Unlocked bootloader (Instructions)
• Nameless AOSP ROM Image (Download here)

Instructions when coming from OOS

1. Open CMD and cd into the directory with the files. (DO NOT USE POWERSHELL!)
2. Reboot your device into fastboot with adb reboot fastboot if you're in system or fastboot reboot fastboot if you're in the bootloader or recovery.

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You can also boot into fastboot using the button combination

3. Verify your device is detected by running fastboot devices on CMD and flash the downloaded images using the following commands:

fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash vendor_boot vendor_boot.img

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If your device isn't detected when in fastboot download the Google OEM Drivers and follow the instructions here.

5. Reboot your phone into recovery mode, click "Install Update" -> "ADB Sideload".
6. Sideload nameless using adb sideload Nameless-AOSP_xxx.zip.

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Once you see a back arrow at the top left corner of your recovery the sideload is completed. Progress on your pc will stop at around 47%. This is normal behaviour.

7. Click back arrow, then click "Factory reset" -> "Format data/factory reset" -> "Format data"
8. After the format is completed, click the back arrow and then click "Reboot to system".

Instructions when coming from a custom ROM

1. Boot into recovery using adb reboot recovery if you're on system and fastboot reboot recovery if you're on fastboot or bootloader.
2. Sideload nameless using adb sideload Nameless-AOSP_xxx.zip.

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Once you see a back arrow at the top left corner of your recovery the sideload is completed. Progress on your pc will stop at around 47%. This is normal behaviour.

3. Click back arrow, then click "Factory reset" -> "Format data/factory reset" -> "Format data"
4. After the format is completed, click the back arrow and then click "Reboot to system".