Unlocking the bootloader (using fastboot oem unlock commands) allows the installation of custom firmware such as , Pixel Experience , or other Generic System Images (GSIs). These custom firmware builds strip away XOS entirely, offering a clean, ad-free, and stock Android experience. The benefits are substantial: improved performance, no bloatware, faster notification delivery, and extended software support beyond Infinix’s official window.

The firmware update path has been notably non-linear. While the device has received two major Android version upgrades (11 → 12 → 13), the timeline has been erratic, with some regions receiving updates months after others. Infinix prioritizes its latest models, so the Zero X Pro, being a previous generation device, receives only quarterly or biannual security patches rather than the monthly cadence of flagship phones.

The firmware also encodes the specific drivers for the device's standout feature: the 8-megapixel periscopic telephoto lens offering 5x optical and up to 60x hybrid zoom. The image processing algorithms, noise reduction routines, and stabilization logic are all embedded within the camera firmware module, a critical sub-component of the main system firmware. The Zero X Pro’s firmware is packed with value-added software features that extend beyond standard Android. These are the primary differentiators that Infinix markets.

On the positive side, the firmware includes features like for enhanced audio tuning via the dual speakers, Super Charge protocols that manage the 45W fast charging curve, and Game Zone , a dedicated performance mode that prioritizes GPU cycles and network traffic. Features like Video Assistant (for WhatsApp video calls) and Social Turbo (for downloading videos from social media) are deep system-level integrations that show a clear understanding of the target market's usage patterns.