Part of Xiaomi guides, 2022 guides.

This is the light version of a ROM review. One image, one flash, and the part that actually matters: how Project Blaze behaves once your vendor layer is in the mix.

Project Blaze on Android 12L is the base here, and it ships as a phh-treble style GSI. That means you are replacing the system partition and leaving the vendor and kernel alone. Once you understand that, the rest of this page is straightforward.

Device here is the Xiaomi 11T Pro.

What a GSI actually means for your phone

Worth a minute, because it is the source of most disappointment with generic system images.

The ROM is the portable part. Android 13 or 12L, the launcher, the settings, the framework — all of that comes from the image you flash. The hardware support — camera, modem, sensors, fingerprint — comes from your phone's own vendor and kernel.

So when something hardware-related is off, the ROM is not the one to blame. That is your vendor. A recent vendor and kernel gives you far fewer surprises.

What you need

• An unlocked bootloader. Required, and unlocking wipes the phone the first time.
• The Project Blaze OS GSI download. ARM64 AB is the only architecture published.
• The vbmeta file for your phone.
• Platform tools on the PC.
• A custom recovery, since the last step is a data wipe from recovery.
• A full backup. This wipes data.

Step 1 — download the right image

Take the ARM64 AB image. It is the only one published for this release, so there is no guesswork and no A64 variant to pick between.

On build type: this release is GApps or slim. There is no vanilla build, so if you wanted a fully Google-free system, this is not the release for it.

Step 2 — fastboot, and make sure the PC sees the phone

Power off, then hold Volume Down and Power to reach the bootloader. Plug in and run:

fastboot devices

A serial number with the word fastboot next to it is what you want. Nothing means a driver issue, and the flash will not work until you fix it.

Step 3 — move to fastbootd

fastboot reboot fastboot

The system partition can only be erased and written in fastbootd. In the plain bootloader those commands fail.

Step 4 — flash vbmeta with both flags

fastboot --disable-verity --disable-verification flash vbmeta

Both flags. This is the step that decides whether the phone boots at all. Leave verification on and the device rejects the modified system image at boot.

Step 5 — erase and flash system

fastboot erase system

fastboot flash system

Give it a couple of minutes. The image is large, and a flash that looks slow is usually just a slow USB port. Do not unplug the cable and do not close the window.

Step 6 — wipe data, then reboot

fastboot reboot recovery

Wipe data in Mi Recovery, then reboot. Step six is step six for a reason. Old userdata is encrypted with keys from the previous system, so new system on old userdata is the classic bootloop. If you skip one thing on this page, do not let it be this.

The first look

Once it is up, the setup wizard runs and the phone settles. This is the cold boot and first setup part, and it is where you find out how the vendor layer is going to behave.

Have a look around. Check the things you use constantly first:

• The camera app, because on a GSI this is where vendor quality shows.
• Calls and mobile data, which depend on your modem firmware.
• The fingerprint sensor, which is vendor side.
• Bluetooth audio, since that catches people out.
• How the phone handles a heavy notification stack.

If those all behave, a GSI is usually a solid daily. If the camera looks soft or a sensor is flaky, that is your vendor, and the answer is a newer vendor and kernel rather than a different GSI.

What is broken

Nothing is listed inside the ROM. That is worth saying plainly, because it is unusual. On the device side it depends entirely on your vendor and kernel, so results differ from phone to phone. Two people on the 11T Pro can have very different experiences and both be telling the truth.

Where people get stuck

• Skipping the data wipe. The classic bootloop, and it is a step six problem every time.
• Wrong architecture. Only ARM64 AB is published here, so download that one.
• Skipping the vbmeta flags. Without both flags the GSI will not boot.
• Blaming the ROM for hardware. Camera, calls and sensors ride on your vendor and kernel, not the image.

Honest notes

A GSI is portable and quick to swap. That is the appeal. Put it on, and if you do not like it, flash the next GSI over it without touching your vendor.

The cost is that the ROM cannot fix hardware, and you are always at the mercy of how recent your vendor is. If you have been meaning to update your vendor and kernel, do that before you judge this build.

If the driver side of the flash is the annoying part, the free Rom Flasher tool on GitHub handles the ADB and fastboot driver install in a couple of clicks. It is free, and the link is in the downloads section.

One last thing. Finish the setup wizard on an empty phone before restoring anything, so you find out what is broken before you have two hours of restored files on top of it.

Full description from the video

Project Blaze OS on Android 12L as a GSI for the Xiaomi 11T Pro — a quick flash, a cold boot, and a straight answer about what a GSI means for the rest of your phone.

This is the light version of a ROM review. One image, one flash, and the part that actually matters: how it behaves once your vendor layer is in the mix. Project Blaze on Android 12L is the base here, and only an ARM64 AB image is published for it.

📱 Device : Xiaomi 11T Pro

🧩 ROM : Project Blaze OS (GSI, phh-treble)

🤖 Android : 12L

👤 Credits : @ChonDoe

🎬 In This Clip

• Flashing the GSI over fastboot, start to finish.
• Cold boot and first setup.
• A look around the ROM, then the honest part about device-side behavior.
• The downloads, so you can run the same flash.

❓ Common Questions

• Do I have to wipe data? Yes, and it's step six for a reason — skipping it usually ends in a bootloop.
• Which image should I download? ARM64 AB. That's the only architecture published for this release.
• Is there a vanilla build? No. This release is GApps or slim.
• Do I need to be on a specific vendor? Not a specific one, but a recent vendor and kernel gives you far fewer hardware surprises.
• What about bugs? Nothing is listed inside the ROM. On the device side it depends on your vendor and kernel, so results differ per phone.

📦 Install Order

1. fastboot reboot fastboot
2. fastboot --disable-verity --disable-verification flash vbmeta
3. fastboot erase system
4. fastboot flash system
5. fastboot reboot recovery
6. Wipe data in Mi Recovery, then reboot

Common questions

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