iOS 4.3

How to Speed Up Web Apps on the iPhone

Alex Heath ∙ March 31, 2011

In iOS 4.3, Apple has supposedly limited the speed of web apps added to the iPhone's home screen. Develepors and users have been reporting that web-based applications launched from an independent springboard icon are loading more than 2x slower than sites opened in Mobile Safari.

Meaning that, web apps/favorite sites launched from an icon shortcut aren't given any access to the Nitro Javascript engine that's baked into iOS 4.3. If Apple has intentionally hampered the performance of web apps in 4.3, such a move could been seen as a subliminal push to get people downloading more App Store apps.

If you've noticed lagging performance with your favorite web apps in iOS 4.3, there's an easy way to take advantage of Mobile Safari's full resources...

Great Progress Being Made on iOS 4.3.x Untethered Jailbreak

Jeff Benjamin ∙ March 30, 2011

Dev Team member MuscleNerd has made it known that things are looking good as far as the 4.3.x untethered jailbreak is concerned.

On Monday, we reported on the fact that an untether had indeed been accomplished. Shortly thereafter, via Twitter, MuscleNerd confirmed that the Dev Team is implementing that untether into their upcoming jailbreak.

While there is of course no solid ETA for a release of the jailbreak, judging from the screenshot posted on his Twitter account, it's probably not that far off...

Has Your iPhone Battery Life Improved in iOS 4.3.1?

Guest Author ∙ March 28, 2011

Now that you've had a couple of days with iOS 4.3.1, for those of you that updated, we're wondering how the latest OS is going for you so far.

When iOS 4.3 was released, there were several bugs/issues reported by the iPhone community in the new OS, one of the major ones being poor battery life. At the time, a good amount of early iOS 4.3 adopters attributed the poor battery life to auto-lock issues, causing the screen to stay on for hours at a time. The problem seemed to be affecting only iPhone and iPod Touch 4G owners.

Apple Patched Comex’s Exploit in iOS 4.3.1

Cody Lee ∙ Updated February 6, 2016

The cat and mouse game between Apple and jailbreakers is getting intense. Apple got real serious when they added ASLR to iOS 4.3 and forced iDevice hackers back to their drawing boards. But members of the jailbreak community responded, and a tethered jailbreak was quickly made available with a patched mobile substrate file.

The latest move from Apple seems to be a big one. Comex tweeted about an hour ago that his kernel exploit was fixed in Apple's latest version of the firmware, iOS 4.3.1. It was public knowledge that i0n1c and other jailbreakers were specifically waiting for iOS 4.3.1 to be released to prevent something like this from happening...

Gevey SIM Also Unlocks iPhone 4 Baseband 04.10.01

Sébastien Page ∙ Updated February 6, 2016

Last week we told you about the Gevey SIM which basically unlocks any iPhone 4. Today, a video confirms that the Gevey SIM can unlock any iPhone 4 on any iOS and any baseband. This means that if you have an iPhone 4 4.3 with baseband 04.10.01, the Gevey SIM will work for you too.

While this Gevey SIM card sounds like a miracle, it does come with a few drawbacks which might frighten some of you...

Comex’s iOS 4.3 Jailbreak uses a Userland Exploit

Sébastien Page ∙ Updated February 6, 2016

Last week we reported about Comex being the first to jailbreak iOS 4.3 on the iPad 2. Today we find out a bit more information about this iOS 4.3 jailbreak. In a reply to a tweet asking him what kind of exploit Comex had found in iOS 4.3, he said that he uses a userland exploit, meaning the jailbreak might be applied directly from the device, a la JailbreakMe.

Because a userland jailbreak can easily be patched via a software update, and with the rumors of iOS 4.3.1 coming in the next couple weeks, I doubt we will see Comex's jailbreak before then...

Sn0wBreeze 2.3 Beta 4 Released, Minor Bug Fixes

Alex Heath ∙ Updated January 24, 2016

iH8Sn0w has pushed another update to his Windows jailbreak tool for iOS 4.3. Sn0wBreeze 2.3b4 adds some bug fixes and more baseband compatibility.

Sn0wBreeze 2.3 offers a tethered jailbreak solution for iOS 4.3, but the tool is still in beta. This means that stability is not guaranteed, and you should use it at your own risk...

Gevey SIM Interposer Provides Unlock For All iPhone 4s

Guest Author ∙ March 17, 2011

Remember the days of the TurboSIM, and how that was a popular method for unlocking the iPhone 2G in 2008?

Gevey, one of the companies that was a leading provider of those TurboSIMs has released a SIM Interposer which can unlock the iPhone 4 up to iOS 4.3 by force activating the baseband using the emergency dialer.

Cydia Now Showing iOS 4.3 SHSH Blobs

Guest Author ∙ March 16, 2011

If you've launched Cydia today, you'll notice that it is now showing your SHSH blob for iOS 4.3 official and beta builds (if you saved them).

Although it is already too late to save your iOS 4.2.1 SHSH blobs, if Cydia isn't showing you've saved your iOS 4.3 SHSH blobs, you may want to fire up TinyUmbrella and save them while you still can. As we've stated before, saving your SHSH blobs can come in handy for future jailbreaks, such as Jailbreak Monte. They are also necessary when you try to downgrade your iPhone to a previous iOS version that Apple is no longer signing.

Sn0wBreeze 2.3 Beta 2 Tethered iOS 4.3 Jailbreak Released

Alex Heath ∙ Updated February 6, 2016

iH8sn0w has pushed another update to his Sn0wBreeze jailbreak solution for Windows. As the only current jailbreak tool for iOS 4.3, Sn0wBreeze 2.3 offers a tethered jailbreak for those unlucky enough to update their firmware to 4.3.

Sn0wBreeze 2.3b2 adds several improvements from the first beta, but nothing too significant. Sn0wBreeze 2.3 is still in beta, and iH8sn0w and team are working hard to create an untethered solution for the popular Windows jailbreak tool...

Battery Issues May Be Another Reason to Stay Away From iOS 4.3

Cody Lee ∙ Updated January 24, 2016

Here at iDB, we've certainly warned you of the dangers in upgrading to iOS 4.3. Until today, that warning was only meant for jailbreakers. Well, it looks like even stock users have a reason to hold off.

Several iLounge editors are reporting severe battery drain in their iDevices, after upgrading to iOS 4.3. Their experiences coincide with users across several Apple Support threads, dedicated to this very topic...

New Version of Mobile Substrate Adds ASLR Support

Jeff Benjamin ∙ Updated March 18, 2019

If you're one of the early birds who decided to jailbreak their iOS 4.3 firmware without proper Mobile Substrate support, we have good news for you.

A patched version of Mobile Substrate is available that reportedly addresses the issues with ASLR.

As you're aware, the current version of Mobile Substrate doesn't work with iOS 4.3, rendering many of our favorite jailbreak apps and tweaks inoperable on Apple's latest firmware...