Custom Rom — For Huawei P40 Pro

The Huawei P40 Pro remains, to this day, one of the most exquisitely engineered smartphones ever made. Its Leica quad-camera system, the "Overflow Display" with 90Hz refresh rate, and the Kirin 990 5G chipset were flagship killers in every sense. However, the device shipped with a catastrophic Achilles' heel: No Google Mobile Services (GMS).

Due to US sanctions, Huawei launched the P40 Pro with its own Huawei Mobile Services (HMS) and the AppGallery. For millions of users worldwide, this was a dealbreaker. The inability to use Google Pay, YouTube, Gmail, or the Play Store natively forced many to look for drastic solutions. Enter the world of Custom ROMs.

Installing a custom ROM on the Huawei P40 Pro is not a journey for the faint of heart. It is a technical odyssey filled with bootloader locks, paid services, and significant risks. But for those willing to tinker, the reward is a fully functional Google-integrated flagship phone. This article explores everything you need to know.

Step 1: Backup Your Data Flashing wipes everything. Use Huawei Backup to an external USB-C drive. Custom Rom For Huawei P40 Pro

Step 2: Unlock the Bootloader (Paid) Use DC-Unlocker. Install the client, connect the phone in fastboot mode, pay for credits, and retrieve the unlock code. Command: fastboot oem unlock [YOUR_CODE]

Step 3: Flash Custom Recovery fastboot flash recovery_ramdisk twrp.img

Step 4: Boot into TWRP & Wipe Power off. Hold Volume Up + Power. In TWRP, wipe Dalvik, Cache, System, Data. (Never wipe Vendor or Product). The Huawei P40 Pro remains, to this day,

Step 5: Flash the ROM

Step 6: Format Data This is critical. Go to Wipe > Format Data > type "yes". This decrypts the partition. Failure to do this results in a bootloop.

Step 7: Reboot The first boot takes 5–10 minutes. Step 6: Format Data This is critical

Custom ROMs on Huawei devices are community-driven and may have imperfections. Common issues on P40 Pro ROMs include:

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Project Treble allows the P40 Pro to run a Generic System Image (GSI). You can flash a vanilla Android 13 or 14 GSI (like LineageOS GSI or crDroid GSI).