Part of POCO guides, AOSP guides, 2026 guides.

Mica OS skips QPR1 and goes straight to QPR2, so the feature set is ahead of the builds doing the rounds on other phones. The flip side is that this is the initial release, and the maintainer says it plainly: expect bugs.

It is Android 16, a signed GApps build dated 27 Dec 2025, credited to @rthedream, and it is built for the POCO X7 Pro, codename rodin. Signed and GApps together is why it is easier to live with day to day than some AOSP builds.

The fingerprint part is the real news

If your POCO X7 Pro uses the Jiiov sensor, this is the build you were waiting for. You can finally calibrate the fingerprint on an AOSP base, and there is a guide linked below with the exact steps. I tested that part myself, and it is the reason this video exists.

Before you flash, remove your lock screen and delete your registered fingerprints. Leaving a fingerprint registered during the flash is how sensor problems start, and then you are troubleshooting something you caused at step zero.

What you need

• The Mica OS 16 QPR2 ROM zip for rodin
• vendor_boot.img for this exact build
• A PC with ADB and Fastboot, plus the driver installed
• Lock screen and fingerprint settings removed before you start
• A backup, because a factory reset and format data are part of this install

Step 1 - fastboot, and check the PC sees the phone

Boot the phone into fastboot and connect it to the PC. Run a devices check before you flash anything. If the PC cannot see the phone here, it will not see it in the middle of the install either.

Step 2 - flash vendor_boot to both slots

Flash vendor_boot to both slots. Both, not just the active one. Skipping the inactive slot is a common reason a phone behaves differently after switching slots later.

Step 3 - reboot and hold Volume Up for recovery

Reboot the phone and hold Volume Up as it comes back up to land in recovery.

Do not use the fastboot reboot recovery shortcut here. It can leave you in a state you did not plan for, and the button hold is only a few seconds of your time.

Step 4 - factory reset, then format data

Do the factory reset, then format data. Both steps, in that order. Formatting data is what clears the encryption from the old system, and skipping it is the usual cause of a setup that never completes.

Step 5 - sideload the ROM

Go to Apply update, then Apply from ADB, and sideload the ROM zip from the PC. Let it run to the end without touching either device.

Step 6 - the question after sideloading

After the sideload finishes it asks whether you want GApps or Magisk. On the GApps build, skip it. This build already has Google in it, so choosing again just adds a step you do not need.

Step 7 - reboot to system

Reboot into the system and let setup finish. If you are on a Jiiov sensor and your fingerprint misbehaves, the calibration guide linked below is the next thing to read, not a reason to reflash.

Where people get stuck

• Treating this as a finished release. It is the first QPR2 build, so bugs are part of the deal.
• Flashing root out of habit. If you do not need it, skip it and keep the setup simple.
• Leaving the fingerprint registered before flashing, which is how sensor problems start.
• Using the fastboot reboot recovery shortcut instead of holding Volume Up.

One known issue

The fingerprint placement screen gets distracted by the "Do it later" button. Registration still works, so do not panic when it happens. Any other problem, the maintainer wants a log, and the note about that is short and blunt.

Who should install this

Install it if you want newer than QPR1, you are on a Jiiov sensor and have been stuck without a fingerprint fix, or you like a signed GApps build with Google already in place.

Wait if you cannot tolerate a bug list on your only phone. First-release builds are for people who enjoy reporting things as much as using them.

The PC side is the usual bottleneck, and the free Rom Flasher tool on GitHub sets up the ADB and fastboot driver in a couple of clicks. It is free, and the link is in the downloads section.

Full description from the video

Mica OS 16 QPR2 on the POCO X7 Pro (rodin) — the full install with vendor_boot and ADB sideload, plus the fingerprint calibration that Jiiov users have been waiting for.

Mica OS skips straight to QPR2, so the feature set is newer than the QPR1 builds doing the rounds. This is the initial release though, and the maintainer says it plainly — expect some bugs. It's a signed GApps build, which makes it easier to live with day to day.

One genuinely good detail: Jiiov users can finally calibrate their fingerprint on AOSP, and the exact steps are linked below. I tested that part myself.

📱 Device : POCO X7 Pro (rodin)

🧩 ROM : Mica OS 16 (QPR2, Android 16, GApps)

📦 Build : 27 Dec 2025

👤 Credited: @rthedream

🛠️ What You Need

• Mica OS 16 QPR2 ROM zip
• vendor_boot.img for this build
• A PC with ADB and Fastboot
• Lock screen and fingerprint settings removed before you begin

📝 Steps

1. Boot the phone into Fastboot and connect it to the PC.
2. Flash vendor_boot to both slots.
3. fastboot reboot, then hold Volume Up for recovery. Never use the fastboot reboot recovery shortcut here.
4. Factory reset, then Format data.
5. Apply update → Apply from ADB, then sideload the ROM zip.
6. Choose yes after sideloading if you want GApps or Magisk. Skip it on the GApps build.
7. Reboot to system and finish setup.

⚠️ Where People Get Stuck

• Treating this as a finished release. It's the first QPR2 build, so bugs are part of the deal.
• Flashing root out of habit — if you don't need it, skip it and keep the setup simple.
• Leaving the fingerprint registered before flashing, which is how sensor problems start.

🐞 Known Issues

• The fingerprint placement screen gets distracted by the "Do it later" button. Registration still works, so don't panic.
• Anything else the maintainer wants in the form of a log — the note is short and blunt.

Common questions

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