bootloaders Archives

Winsage

January 13, 2026

New Windows updates replace expiring Secure Boot certificates

Microsoft is enhancing security for Windows 11 24H2 and 25H2 users by automatically replacing expiring Secure Boot certificates on eligible devices. Secure Boot protects against malicious software by ensuring only trusted bootloaders are executed during startup. Many Secure Boot certificates are set to expire starting in June 2026, which could jeopardize secure booting capabilities if not updated. The update includes a mechanism to identify devices eligible for automatic receipt of new Secure Boot certificates. IT administrators are advised to install the new certificates to maintain Secure Boot functionality and prevent loss of security updates. Organizations can also deploy Secure Boot certificates through various methods. IT administrators should inventory their devices, verify Secure Boot status, and apply necessary firmware updates before installing Microsoft's certificate updates.

BetaBeacon

December 8, 2025

Running Blockchain Games: Android Requirements & Compatibility

Blockchain games use distributed ledgers to store assets and data, including progress tracking and digital economies. Blockchain technology and cryptocurrency integration have transformed digital entertainment, leading to the development of popular Web3 RPG titles like Axie Infinity. Games built on blockchain networks require devices with minimum requirements for Android version compatibility, CPU and GPU performance, RAM, storage, wallet integration, network connectivity, security, and battery life.

Winsage

October 6, 2025

Windows 11 25H2 Installs Can Be A Breeze With This Rufus Tool Tip

Rufus continues to function effectively for Windows 11 installations despite concerns regarding the latest 25H2 update. A bug caused an "Assertion failed!" error when creating installation media, but a recent patch has resolved this issue. Users can bypass Windows 11's minimum requirements by selecting the "first bypass on the WUE dialog." The latest Rufus version 4.11 introduces a new option to use "Windows CA 2023" signed bootloaders, addressing the revocation of older Secure Boot certificates. However, users need a "compatible target PC" to avoid security violations, which can prevent installation if firmware updates are not applied. For a fresh installation, users should obtain the latest Windows 11 image directly from Microsoft.

Winsage

July 3, 2025

Windows Update: Unwanted side effects occurred

Microsoft has acknowledged issues with the latest Windows 11 updates, particularly affecting the update preview released last Friday. Users have reported firewall error messages and some computers failing to boot after applying the updates. The Windows Release Health Notes indicate that these firewall errors, specifically event number 2042 related to Windows Defender Firewall, can be ignored as they do not indicate a malfunction. The issue is linked to a function under development and primarily impacts Windows 11 24H2, with a resolution planned for a future update. Additionally, users of older Fujitsu Esprimo PCs have reported startup problems after installing the June security updates, with affected devices displaying a black screen. Investigations suggest these issues may be related to a DBX update affecting bootloaders when Smart Boot is enabled. Users have speculated that outdated BIOS may be a factor, and instructions for updating firmware have been shared, although they are not user-friendly. Microsoft has not confirmed the startup issues with Fujitsu PCs and is not currently working on a specific solution.

Winsage

June 11, 2025

A worrying Windows SecureBoot issue could let hackers install malware – here’s what we know, and whether you need to update

Researchers at Binarly have identified a critical vulnerability in a widely trusted BIOS update utility that operates on most modern systems using UEFI firmware. This utility, signed with Microsoft’s UEFI CA 2011 certificate, contains a flaw that could be exploited by malicious actors to disable essential security measures and install bootkit malware on personal computers. Microsoft addressed the issue by including a fix in its June 2025 Patch Tuesday cumulative update. The UEFI Secure Boot process is crucial for maintaining system integrity by verifying the authenticity of bootloaders and operating systems.

Tech Optimizer

May 27, 2025

BIOS and Bootloaders in the Crosshairs: Growing Firmware Threats

Hackers are increasingly targeting the startup sequence of systems, focusing on BIOS, UEFI, and bootloaders, which allows them to bypass traditional operating system defenses. Firmware threats often evade conventional security measures, providing attackers with a persistent foothold. Notable bootkits like BlackLotus, BootHole, and EFILock exploit vulnerabilities in boot components, even those protected by Secure Boot. Attackers can embed malicious code in firmware or replace legitimate bootloaders, maintaining control through OS reinstalls and hardware replacements. Common attack vectors include compromised storage, network connections, or console inputs during boot. Malicious code can execute before security software activates, and attackers may exploit misconfigured or outdated signature databases, as well as downgrade attacks on older firmware versions. To mitigate these threats, organizations should enforce Secure Boot policies, regularly update signature databases, and monitor boot behavior for anomalies.