Phoenix Liteos 11 Pro (22621.457) May 2026

: Built on Windows 11 Build 22621.457 , which was an early release of the 22H2 update featuring improved system resource history and enhanced security.

: Automatic Windows Updates are often disabled or "paused" indefinitely to prevent the OS from re-installing bloatware or breaking the custom tweaks. Phoenix LiteOS 11 Pro (22621.457)

: Restart your PC and enter BIOS. Ensure "Secure Boot" is disabled, as custom ISOs often lack the digital signatures required for it. : Built on Windows 11 Build 22621

: Obtain the ISO from the official Phoenix LiteOS YouTube channel or trusted community forums like TeamOS . Verify the hash to ensure the file hasn't been tampered with. Ensure "Secure Boot" is disabled, as custom ISOs

Phoenix LiteOS 11 Pro (Build 22621.457) is a custom, "debloated" version of Windows 11 designed by developer FBConan to maximize performance and minimize resource usage on older or low-end hardware.

: Custom ISOs often require a clean install, which wipes your primary drive. Always back up your files first.

: Using modified ISOs carries inherent risks, as you are trusting a third-party developer with your OS core. Avoid using these for sensitive tasks like online banking.