iPhone Firmware

Some unlucky iPhone users got the short end of the battery life after updating to iOS 4.1. Users have reported battery life issues among other problems with prior firmware updates (remember iPhone OS 3.1?) but now some running iOS 4.1 are seeing their battery percentage drop to zero within hours.

Online discussion forums are hopping with activity from iPhone 4 and iPhone 3GS users complaining of shortened battery life and warm phones running iOS 4.1. Some reports have suggested that errant processes are running in the background constantly and draining the battery power. Bugs in the modem firmware, tethering software, and Game Center have all been cited as possible causes of the issue.

Sometimes for whatever reason an iPhone firmware upgrade ends up being counterproductive or causes issues with your individual phone. Maybe you're experiencing battery life problems with iOS 4.1 on your iPhone 3GS. Updates can even happen by accident with the wrong click of a button, wiping a jailbroken device.

If you have already saved your SHSH files for one or more earlier firmware versions on Saurik's server, you can follow these steps to downgrade from iOS 4.1.

Two months from now Apple will release iOS firmware 4.2 for the iPhone 4, iPhone 3GS and 3G. The new operating system unifies the iOS mobile operating system and iPhones and iPads (with the exception of the original iPhone) will finally be running the same version. Several new features are coming to the iPhone with the iOS 4.2 release.

The beta version was released to developers by Apple today. One new application is the multitasking Print Center. Print Center will allow the iPhone 4 and iPhone 3GS to print wirelessly with AirPrint. As long as a Wi-Fi network and a compatible networked printer are available, photos and other documents can be printed directly from the iPhone.

Apple surprised everyone when they announced that iOS 4.1 would add High Dynamic Range (HDR) photography capabilities to iPhone cameras. HDR combines two or more photos at different exposures to create an optimal scene. Unfortunately, some iPhone 3GS owners were even more surprised that they would not receive the feature when updating.

Although the iPhone 4 upgraded the rear camera to 5.0 megapixels and added a flash, light sensor and HD video recording, iPhone 3GS owners can still get excellent pictures with the previous 3.0 megapixel model. Already the 5x digital zoom feature (added in iOS 4) works well on the 3GS, and HDR can be a simple download away.

Apple released the first major update to its iOS 4 operating system today. The iOS 4.1 firmware is available free using iTunes and features several highly anticipated additions to the iPhone and iPod touch. Several important bug fixes are also included in the release (build 8B117).

iPhone 4 owners will be happy that proximity sensor issues experienced under iOS 4 should be improved. Speed and performance issues should also see improvement for those with older iPhone 3G hardware. Bluetooth connectivity problems have also been addressed by iOS 4.1.