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The June 2026 Secure Boot Certificate Expiry: What You Need to Know

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If you dual-boot or run a Linux distribution with Secure Boot enabled, you may have heard about a major security deadline. The original Microsoft 2011 UEFI Third-Party Certificate Authority (CA) keys, which most Linux distributions rely on to sign their initial bootloaders (shim) on consumer PC hardware, expired at the end of June 2026 The expiration of a certificate doesn't invalidate already-installed, signed binaries on your system; firmware doesn't check expiration dates at boot time. However, moving forward, future Linux bootloader updates and security patches will be signed exclusively using the new Windows UEFI CA 2023 key . If your motherboard's firmware database isn't updated to trust this new 2023 key, your Linux system may eventually experience package management blocks or fail to apply critical bootloader updates. Before running updates, check if Secure Boot is active and see if your system already recognizes the 2023 certificate hierarchy. Open your termi...
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Project Astoria for Lumia 640XL/640/930

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Install stock ffu from windows device recovery tool link 


Put the phone in flash mode by holding power off then volume down. Open Windows Phone image designer and the flash stock ffu 


Put phone in aeroplane mode. This will stop it from updating while you prepare to disable system updates


With registry browser go to HKLM ->SYSTEM -> CurrentControlSet -> Services

The default value is 3 changing it to 4 will stop updates but the store would not work so we need to change it back to 3 and reboot

Use the deployer app to install an apk file



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