macOS Big Sur 11.7.7 (20G1345)｜DMG Installer Image｜Direct Download Link
Technical Specifications
Before downloading and installing, please confirm your device meets the following requirements to ensure smooth system operation:
Basic Requirements
- OS X 10.9 or later
- 4GB RAM
- 35.5GB available storage space (for macOS Sierra or later)
- Certain features require an Apple ID and are subject to service terms
- Some features require a compatible internet service provider and may involve fees
Mac Hardware Requirements
To check your Mac model details, click the Apple logo in the top-left corner of the screen and select "About This Mac." Below are Mac models compatible with macOS Big Sur:
- MacBook (2015 or newer)
- MacBook Air (2013 or newer)
- MacBook Pro (2013 Late or newer)
- Mac mini (2014 or newer)
- iMac (2014 or newer)
- iMac Pro (2017 or newer)
- Mac Pro (2013 or newer)
As a significant update in macOS history, Big Sur not only optimizes for Apple's M1 chip but also redefines the Mac experience with a fresh design, powerful features, and robust privacy protection.
1. A Fresh New Design: A Visual Revolution of Simplicity and Efficiency
The most noticeable change in macOS Big Sur is its "inside-out redesign." From the rounded corners of windows to the color and texture of interface elements, every detail pursues the concept of "focusing on content"—buttons and controls intelligently appear or disappear based on usage scenarios, reducing visual distractions and making document editing and web browsing more immersive.
The program dock icons also underwent a unified transformation: retaining Mac's classic characteristics while aligning more consistently with the icon style of Apple devices like iPhone and iPad, creating visual synergy across the ecosystem. The newly added Control Center completely changes the way quick operations are performed—you can directly access brightness adjustment, Do Not Disturb mode, and display settings from the menu bar without repeatedly switching in System Preferences. The Notification Center integrates interactive notifications and redesigned widgets, clearly displaying information like weather, calendar, and to-do items, allowing you to grasp important updates at a glance.
Whether you're a new Mac user or a seasoned one, this design brings convenience within familiarity: visually lighter and operationally smoother, everything is designed to help you focus better on your current tasks.
2. Safari Browser: Faster, More Personalized, Enhanced Privacy Protection
As the most commonly used browser for Mac users, Safari received its biggest update since its 2003 release in Big Sur. Speed remains its core advantage—thanks to an optimized JavaScript engine, it loads frequently visited websites 50% faster on average than Chrome, and on Macs with M1 chips, JavaScript runs 1.5 times faster with response speed nearly doubling, all while maintaining industry-leading battery life. Streaming media experience is also fully upgraded, supporting 4K HDR content on YouTube and Netflix for more vivid and clear visuals.
Personalization is another highlight of Safari's update. The new customizable start page allows you to add your favorite background images and pin frequently used reading lists and iCloud tabs, making every browser launch feel like returning to your "personal space." The built-in translation feature supports real-time webpage translation in seven languages, removing language barriers during browsing.
Privacy protection is the highlight of this update. The new Privacy Report visually shows how many trackers Safari has blocked, letting you clearly see which websites are trying to collect your information; Password Monitoring for Data Leaks automatically checks if saved passwords are at risk, all without exposing your account details; for browser extensions, Safari clearly indicates their access permissions, letting you decide when and where each extension can be used, preventing data misuse at the source.
3. Core App Upgrades: Messages and Maps, Making Communication and Exploration More Engaging
Big Sur deeply optimizes core apps on Mac, making daily communication and travel exploration more enjoyable.
The Messages app introduces several practical features: you can pin important group conversations to avoid being overwhelmed by new messages; search functionality is fully upgraded, allowing quick location of links, photos, and keywords in chats; for expression, you can create and customize Memoji directly on Mac, generate personalized stickers to share your mood, and even add dynamic effects like balloons and confetti, instantly bringing text conversations to life. Group interactions are also more efficient—supporting replying to specific messages in threads, @mentioning group members by typing their names, and setting custom photos or emoji symbols for conversations, giving each group a unique identity.
The Maps app completely reimagines the exploration experience. The new City Guides integrate trusted brand recommendations to help you discover popular attractions, restaurants, and activities at your destination; you can also create custom guides to save and share favorite locations with friends and family. The "Look Around" feature provides 360-degree panoramic views, letting you "experience" your destination before departure; detailed indoor maps cover major airports and shopping centers, eliminating worries about getting lost in complex buildings. Most practically, you can plan cycling routes and electric vehicle charging routes on Mac and seamlessly sync them to iPhone for smooth navigation during travel.
4. Enhanced Privacy Protection: Transparent and Controllable, Keeping Your Data Secure
Privacy has always been central to the Apple ecosystem, and Big Sur further enhances transparency and user control. The upcoming Mac App Store will introduce a new "Privacy Labels" feature—each app's product page will clearly display a privacy practices summary reported by developers, similar to a "nutrition label": including data types the app may collect (such as contact info, location), whether this data is shared with third parties, and if it's used for tracking purposes. This intuitive presentation lets you fully understand data flows before downloading an app, enabling truly "informed choices."
From system foundations to application layers, Big Sur's privacy protection design is comprehensive, giving you peace of mind while using your Mac—your data remains under your control.
5. Performance and Compatibility: Powered by M1 Chip, Even Older Apps Run Smoothly
Big Sur isn't just an upgrade in design and features—it's a comprehensive system performance optimization, especially deeply tailored for Apple's M1 chip. Through Universal 2 technology, developers can package apps as binary files supporting both M1 and Intel chips, allowing apps to natively run on different Macs without extra steps, fully leveraging the M1 chip's powerful performance. For Intel apps not yet updated, Big Sur's built-in Rosetta 2 technology automatically translates them, ensuring older apps still run smoothly on M1 Macs, with some graphics-intensive apps even performing better under Rosetta 2 than on older Intel integrated graphics Macs.
Additionally, the Neural Engine from the M1 chip makes its debut on Mac, providing powerful computing power for machine learning applications, enabling developers to build smarter AI features; system-level optimizations have also significantly improved energy efficiency, enhancing battery life while maintaining high performance. Whether you're using a new M1 Mac or a classic Intel model, Big Sur delivers a smoother, more efficient system experience.
macOS Big Sur redefines visual experience with a fresh design, boosts daily efficiency with powerful features, safeguards data security with robust privacy protection, and unlocks Mac's performance potential through M1 chip compatibility. If you're ready for this upgrade, try the dmg installer below to begin your Big Sur journey.
Appendix: Solution for "The Copy of the Application Is Damaged" When Installing macOS
Issue Description:
When installing macOS, you receive the message: "This copy of the application is damaged and cannot be used to install macOS."
Cause Analysis:
This is usually caused by expired certificates in older macOS installers.
Solution Steps:
Disconnect from the Internet: Ensure your Mac is not connected to the internet.
Open Terminal: Locate and open the "Terminal" app in the installation or recovery interface.
Enter Time Adjustment Command:
In Terminal, type the following command and press Enter:date 052110322023.45MM= Month (05 → May)DD= Day (21 → 21st)hh= Hour (10 → 10 AM, 24-hour format)mm= Minute (32 → 32 minutes)YYYY= Year (2023 → 2023)ss= Second (45 → 45 seconds)
📌 Example Time: 10:32:45 AM, May 21, 2023
Verify Time:
Typedateand press Enter to check if the displayed time matches what you just set.Retry Installation: Close Terminal and continue with the macOS installation process.
Download Guide
Version Info: We provide macOS Big Sur version 11.7.7 (released May 18, 2023). This version primarily focuses on security updates, fixing multiple vulnerabilities related to privilege bypass, arbitrary code execution, privacy leaks, and privilege escalation.
To provide you with the most convenient experience, we have compiled all available download methods on one page. After accessing the link below, you can freely choose the most suitable download channel based on your network environment and preferences.
Download sources available on this page include:
High-Speed Direct Link from Our Site: Enjoy fast, stable downloads powered by Cloudflare R2.
Public Cloud Mirror: No additional steps required, convenient for saving to your personal account. We offer Google Drive and OneDrive mirrors.
Important Notes:
- File Verification: Please use the SHA-256 hash provided on the page to verify file integrity.
- Cost Information: All channels are completely free.
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