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I had been away from Project Infinity X for months, so flashing v3.12 on the POCO

X7 Pro was a proper catch-up rather than a small update. Here is what I found

after living with it for a while, because a ROM review that only covers the first

twenty minutes is not much of a review.

How the install went

This is the part I care about most, and it is the part that surprised me.

The Windows install took minutes. Fastboot, flash the recovery image, boot to

recovery, format data, sideload the ROM, reboot. I never typed a single command.

The tool runs each step for you, which means the usual evening of chasing driver

problems simply did not happen.

If you have ever spent an hour on fastboot devices returning nothing, you know

why that matters. The setup cost of a custom ROM is usually the reason people

give up, not the ROM itself.

What it looks like and how it feels

The UI is genuinely smooth. Scrolling lazily through long lists, switching

between apps, opening and closing things, it all holds up without that hitch that

makes you put the phone down.

There is plenty of customization, and it stops short of feeling stuffed. You can

go deep in the settings if you want to, and the defaults are sensible if you do

not. That balance is harder to get right than it sounds, and a lot of ROMs get it

wrong in one direction or the other.

What changed for the better

Two things stand out.

Mi Camera is bundled in. This matters more than it sounds on paper. Most AOSP

ROMs ship with a camera app that makes you wince, so you end up spending an

afternoon sideloading something better and hoping it survives the next update.

Having a camera that just works out of the box saves all of that.

Play Store showed the device as certified for me. That makes everyday life

easier, because apps that check the device before running tend to behave instead

of refusing to open.

What I tested

• Cold boot and how the system settled over the first hour
• Scrolling, app switching and animation smoothness
• Gaming load and how the phone handled heat
• Battery drain across a normal day
• Customization depth in the settings
• Mi Camera for basic photos and video
• Play Store certification and basic integrity

What is not perfect

Battery is fine, not magic. A normal day of messages, browsing and camera use got

me through without worry. Heavy gaming still chews through it, which is true of

this phone on any ROM, so I would not hold it against the build.

The honest caveat about the install method: when I filmed this, the Android app

was still being finished, so the route I used was the Windows tool. If you are

waiting for the phone-only flow, that was not ready yet on this build.

Who should install it

Install it if you want an AOSP-style ROM on the POCO X7 Pro that behaves like a

finished product rather than a project. The camera situation alone makes it an

easy recommendation, and the certification means your everyday apps are less

likely to complain.

Skip it if you need the camera app you already know and love from stock, or if

you spend most of your phone time in demanding games and battery life is your top

priority. Nothing here fixes the power draw of a heavy game.

Verdict

Project Infinity X v3.12 is a keeper on the POCO X7 Pro. Fast where it counts, it

does not fight you, and a camera that works out of the box saves an entire

afternoon. This is a daily driver, not a benchmark toy, and that is a compliment.

If you want the same experience without the command-line setup, the free Rom

Flasher tool runs this flash for you step by step. It is free, and the link is in

the downloads section.

Full description from the video

Project Infinity X v3.12 on the POCO X7 Pro — I flashed it from the PC tool, set it up and lived with it for a while: smoothness, gaming, battery and the small details that decide if a ROM stays installed.

I've been away from Infinity X for months, so this was a proper catch-up. The Windows install took minutes: fastboot, flash the recovery image, boot to recovery, format data, sideload the ROM, reboot. I never typed a command — the tool runs each step for you, which is the part I care about most.

What I like: the UI is genuinely smooth, there's plenty of customization without it feeling stuffed, and Mi Camera is bundled in. That last one matters, because most AOSP ROMs ship a camera that makes you wince. Play Store also showed the device as certified for me, which makes life easier with everyday apps.

🔬 What Was Tested

• Cold boot and how the system settled over the first hour
• Scrolling, app switching and animation smoothness
• Gaming load and how the phone handled heat
• Battery drain across a normal day
• Customization depth in the settings
• Mi Camera for basic photos and video
• Play Store certification and basic integrity

📊 Verdict

Project Infinity X v3.12 is a keeper on the POCO X7 Pro. It's fast where it counts, it doesn't fight you, and a camera that works out of the box saves an entire afternoon of sideloading fixes. Battery is fine, not magic — heavy gaming still chews through it. This is a daily driver, not a benchmark toy, and that's a compliment.

📱 Device : POCO X7 Pro (rodin)

🧩 ROM : Project Infinity X v3.12

💻 Method : Windows PC tool. The Android app was still being finished when I filmed this.

Common questions

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