IOS 9.3.5: The Definitive Guide, Features, And Security

by Jhon Lennon 56 views

Hey guys! Today, we're diving deep into the world of iOS 9.3.5. While it might seem like ancient history in the fast-paced tech world, this particular update holds a significant place in Apple's timeline. Let's explore everything you need to know, from its features and compatibility to its security updates and why it remains relevant even now.

What is iOS 9.3.5?

iOS 9.3.5 is a security update released by Apple for older devices that couldn't run the latest versions of iOS at the time. Think of it as a final patch to keep these devices safe and functional. Specifically, it targeted vulnerabilities that could allow attackers to jailbreak devices remotely and install spyware. This update was crucial for maintaining the integrity and security of older iPhones and iPads that were still in use.

The update was primarily focused on fixing three critical security vulnerabilities discovered by Citizen Lab, a research group at the University of Toronto. These vulnerabilities, known as Trident, could be exploited through a chain of zero-day exploits. Zero-day exploits are vulnerabilities that are unknown to the vendor (in this case, Apple) and have no available patch. Once exploited, attackers could gain complete control of the device, access personal data, and monitor communications.

iOS 9.3.5 addressed these vulnerabilities by patching the underlying code and preventing the exploits from being used. This was particularly important for users who might not have been aware of the risks or who were unable to upgrade to newer devices. By releasing this update, Apple demonstrated its commitment to supporting its customers, even those using older hardware.

Furthermore, iOS 9.3.5 serves as a reminder of the ongoing battle between security researchers and malicious actors. The discovery and patching of the Trident vulnerabilities highlight the importance of staying up-to-date with the latest security updates, regardless of the age of your device. It also underscores the need for companies like Apple to continuously monitor and address potential security threats to protect their users.

Devices Compatible with iOS 9.3.5

iOS 9.3.5 wasn't for everyone; it was specifically designed for older devices. Let’s break down which iPhones and iPads got this crucial update. Knowing if your device was compatible helps you understand if you needed (or still need) this update for optimal security.

Here's a list of devices that could run iOS 9.3.5:

  • iPhone 4S
  • iPhone 5
  • iPhone 5c
  • iPhone 5s
  • iPhone 6
  • iPhone 6 Plus
  • iPad 2
  • iPad 3rd generation
  • iPad 4th generation
  • iPad Air
  • iPad Air 2
  • iPad mini
  • iPad mini 2
  • iPad mini 3
  • iPod touch 5th generation
  • iPod touch 6th generation

If you have one of these devices and haven't updated to iOS 9.3.5, it’s highly recommended you do so. While these devices are old, they can still be used for basic tasks, and ensuring they are secure is essential. Keeping them updated protects your personal information and prevents potential security breaches.

It's important to note that these devices cannot be updated to the latest iOS versions. Apple eventually stops supporting older hardware to focus on newer technology and features. However, providing security updates like iOS 9.3.5 ensures that even older devices remain safe to use for as long as possible. For those still using these devices, it’s a good practice to avoid storing sensitive information or conducting financial transactions on them, as they are more vulnerable compared to devices running the latest iOS versions.

Key Features and Improvements in iOS 9.3.5

Alright, let's talk about the key features and improvements that came with iOS 9.3.5. While it wasn't a feature-rich update like some of the major iOS releases, its primary focus was on security. But what exactly did it bring to the table? Let's break it down.

Security Enhancements

The main highlight of iOS 9.3.5 was its robust security enhancements. As mentioned earlier, this update specifically targeted and patched the Trident vulnerabilities. These vulnerabilities were a serious threat because they could allow attackers to remotely jailbreak a device and install spyware. By fixing these vulnerabilities, Apple ensured that users of older devices were protected from these sophisticated attacks.

The Trident vulnerabilities consisted of three zero-day exploits:

  1. CVE-2016-4654: An information leak in the kernel that allowed attackers to bypass address space layout randomization (ASLR).
  2. CVE-2016-4655: A memory corruption vulnerability in the kernel that allowed attackers to execute arbitrary code.
  3. CVE-2016-4656: A memory corruption vulnerability in WebKit, the browser engine used by Safari, that allowed attackers to execute arbitrary code when a user visited a malicious website.

By patching these vulnerabilities, iOS 9.3.5 effectively closed the door to attackers who were trying to exploit these weaknesses. This was a critical update for users who were still using older devices, as it provided them with a much-needed layer of protection against potential threats.

Stability Improvements

In addition to the security enhancements, iOS 9.3.5 also included some stability improvements. While not as significant as the security fixes, these improvements helped to make the operating system more reliable and less prone to crashes and other issues. These improvements ensured that the devices ran smoothly and provided a better user experience.

Bug Fixes

As with any software update, iOS 9.3.5 also included a number of bug fixes. These fixes addressed various minor issues that users had been experiencing, such as problems with certain apps or features. While these bug fixes may not have been groundbreaking, they helped to improve the overall user experience and make the operating system more polished.

In summary, while iOS 9.3.5 may not have been a major update in terms of new features, it was a critical update in terms of security. By patching the Trident vulnerabilities and including stability improvements and bug fixes, Apple ensured that users of older devices were protected from potential threats and could continue to use their devices with confidence.

How to Update to iOS 9.3.5

Updating to iOS 9.3.5 is a straightforward process. If you have a compatible device and haven't already updated, here’s how to do it. Keeping your device updated is crucial for security, so let’s get right to it.

Steps to Update

  1. Connect to Wi-Fi: Make sure your device is connected to a stable Wi-Fi network. This will ensure the update downloads smoothly and without interruption.
  2. Check Battery Level: Ensure your device has at least 50% battery life. If not, plug it into a power source. You don’t want your device to die mid-update.
  3. Navigate to Settings: On your iPhone or iPad, open the Settings app.
  4. General: Scroll down and tap on General.
  5. Software Update: Tap on Software Update. Your device will check for available updates.
  6. Download and Install: If iOS 9.3.5 is available, you’ll see it listed. Tap Download and Install. You may need to enter your passcode.
  7. Agree to Terms: Read and agree to the terms and conditions.
  8. Wait for the Update: Your device will download the update, which may take some time depending on your internet speed. Once downloaded, it will prepare the update for installation.
  9. Install Now: Tap Install Now to begin the installation process. Your device will restart, and you’ll see a progress bar as the update is installed.
  10. Update Complete: Once the installation is complete, your device will restart again, and you’ll be running iOS 9.3.5.

Troubleshooting

Sometimes, things don’t go as planned. Here are a few common issues and how to troubleshoot them:

  • Not Enough Storage: If you don’t have enough storage space, you’ll need to free up some space by deleting apps, photos, or videos.
  • Update Failed: If the update fails, try restarting your device and trying again. Make sure you have a stable internet connection.
  • Stuck on Verification: If the update is stuck on verification, try connecting to a different Wi-Fi network or using iTunes to update.

By following these steps, you can ensure your device is updated to iOS 9.3.5, providing you with the latest security enhancements and bug fixes. Keeping your device up-to-date is a simple yet effective way to protect your personal information and ensure a smooth user experience.

Why iOS 9.3.5 Still Matters

You might be wondering, why are we even talking about iOS 9.3.5 in this day and age? Well, even though it's an older update, it still holds significance for a few key reasons. Let's dive into why iOS 9.3.5 still matters.

Security for Older Devices

The most important reason iOS 9.3.5 matters is that it provided crucial security updates for older devices. These devices, like the iPhone 4S, iPhone 5, and various iPad models, were no longer supported by the latest iOS versions. Without iOS 9.3.5, these devices would have been vulnerable to the Trident exploits, which could allow attackers to remotely jailbreak the device and install spyware. By releasing this update, Apple ensured that users of older devices were protected from these serious threats.

Reminder of Security Best Practices

iOS 9.3.5 serves as a reminder of the importance of security best practices. It highlights the fact that even older devices need to be protected from potential threats. It also underscores the need for companies like Apple to continue supporting their products, even after they are no longer the latest and greatest. This update teaches us that security is an ongoing process, and we should always be vigilant about protecting our devices and personal information.

Extent of Software Support

iOS 9.3.5 demonstrates Apple's commitment to long-term software support. Even though the devices that received this update were several years old, Apple still took the time to develop and release a security patch. This shows that Apple values its customers and is willing to go the extra mile to protect them, even if they are using older hardware. This level of support is something that sets Apple apart from many other tech companies.

Lessons for Today

The story of iOS 9.3.5 offers valuable lessons for today. It reminds us that:

  • Security is paramount: Never underestimate the importance of security updates, no matter how old your device is.
  • Companies should support their products: Long-term software support is crucial for protecting users and maintaining trust.
  • Vigilance is key: Stay informed about potential threats and take steps to protect your devices and personal information.

In conclusion, iOS 9.3.5 still matters because it provided essential security updates for older devices, serves as a reminder of security best practices, demonstrates Apple's commitment to long-term software support, and offers valuable lessons for today. While it may be an old update, its impact is still felt today.

Is It Still Worth Using Devices with iOS 9.3.5 Today?

Okay, let's address the elephant in the room: Is it still worth using devices running iOS 9.3.5 in today's world? The answer isn't a simple yes or no. It depends on your needs, expectations, and risk tolerance. Let’s break it down to help you decide.

Limited Functionality

One of the biggest drawbacks of using devices with iOS 9.3.5 is their limited functionality. These devices are several years old, and they simply can't keep up with the latest apps and features. Many modern apps are not compatible with iOS 9.3.5, and even those that are may not run as smoothly as they would on newer devices. This can be frustrating if you rely on your device for productivity, entertainment, or communication.

Security Risks

Even though iOS 9.3.5 provided important security updates at the time, it's important to remember that security threats are constantly evolving. New vulnerabilities are discovered all the time, and older devices are more likely to be targeted by attackers. While iOS 9.3.5 addressed the Trident exploits, there may be other vulnerabilities that have not been patched. This means that using a device with iOS 9.3.5 could expose you to security risks.

Battery Life

Another issue with using older devices is battery life. Over time, batteries degrade and lose their ability to hold a charge. This means that you may need to charge your device more frequently, and the battery may not last as long as it used to. Replacing the battery can be an option, but it can be costly and may not be worth it for such an old device.

Potential Uses

Despite these limitations, there are still some potential uses for devices with iOS 9.3.5:

  • Basic Tasks: These devices can still be used for basic tasks like making calls, sending texts, and browsing the web (although the browsing experience may not be ideal).
  • Media Player: They can also be used as dedicated media players for listening to music or watching videos.
  • E-reader: These devices can be used for reading e-books.
  • Backup Device: If you have a newer device, you can use an iOS 9.3.5 device as a backup in case your primary device is lost or damaged.

Recommendation

Overall, while devices running iOS 9.3.5 can still be used for some basic tasks, it's generally not recommended to rely on them as your primary device. The limited functionality, security risks, and battery life issues make them less practical compared to newer devices. If you do choose to use a device with iOS 9.3.5, be sure to take extra precautions to protect your personal information and avoid storing sensitive data on the device.