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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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Lineage os 20 for pixel 6/pro/6a [unofficial]

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A free and open-source operating system for various devices, based on the Android mobile platform.

Prerequisites; 

Unlocked bootloader 

Run fastboot flashing unlock in fastboot

Note this will trigger a factory reset on the device 

Latest android 13 firmware 


Common sense

Download 







There will be five files;

boot
vendor_boot
Lineage os 20 rom zip file
GApps zip file 
Magisk zip file

Its best to zip the magisk apk before installation. Use your favourite file explorer to rename the extension 

Start a command prompt. I use windows terminal 

.\adb devices 

.\adb reboot bootloader

.\fastboot flash --slot all boot "path to boot.img" 

.\fastboot flash --slot all vendor_boot "path to vendor_boot.img"

.\fastboot reboot recovery 

Format data 

Apply Update > Apply from ADB

.\adb sideload "path to rom zip file"

Advanced > reboot to recovery 

Apply Update > Apply from ADB

.\adb sideload "path to GApps zip"

Advanced > reboot to recovery

.\adb sideload "path to magisk zip' 

.\reboot system now 



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