Menu
Hacker techniques for reversing iPhone upgrade

Hacker techniques for reversing iPhone upgrade

Owners of hacked iPhones have begun posting instructions on how to roll back a recent Apple firmware upgrade that rendered their mobile phones unusable.

The instructions were available Monday on the iPhone Dev Wiki, a Web site devoted to iPhone software hacks and tools.

Since the iPhone's launch, enthusiasts have been developing ways to allow the devices to run unauthorized software and to unlock them so that they can be run on any mobile network. Late last week, however, Apple cracked down on these efforts by releasing a software upgrade that made hacked iPhones unusable.

Since that release, however, hackers have been working on techniques that reverse the effects of this upgrade.

These latest instructions allow users to roll back their firmware upgrades and use some functions like the phone's iPod and Wi-Fi capabilities, but they do not necessarily restore the phone's ability to make calls, according to the iPhone Dev Wiki. That's because hackers have not yet found a way to roll back the firmware used by the iPhone's baseband chip, which is used to make calls.

"So far all attempts to downgrade the baseband have been unsuccessful," the Wiki said. "There have been several reports of successful baseband downgrades online, but these haven't been confirmed. "

Another major area of research has been into techniques that can unlock iPhones that are running the latest 1.1.1 firmware.

But because Apple has now done a much better job of encrypting its iPhone firmware, this will be a much harder job than it was the first time around, said Tom Ferris, a security researcher who works on hacking the iPhone.

That's what everybody's working on right now is trying to get into the firmware," he said. "Just like Steve Jobs said, it's a cat and mouse game."

GO TO 2007 to 2027 Crystal ball gazing


Follow Us

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags AppleiPhonesteve jobs

Events

Featured

Slideshows

Channel kicks 2021 into gear as After Hours returns to Auckland

Channel kicks 2021 into gear as After Hours returns to Auckland

After Hours made a welcome return to the channel social calendar with a bumper crowd of partners, distributors and vendors descending on The Pantry at Park Hyatt in Auckland to kick-start 2021.

Channel kicks 2021 into gear as After Hours returns to Auckland
The Kiwi channel gathers for the 2020 Reseller News Women in ICT Awards

The Kiwi channel gathers for the 2020 Reseller News Women in ICT Awards

Hundreds of leaders from the New Zealand IT industry gathered at the Hilton in Auckland on 17 November to celebrate the finest female talent in the Kiwi channel and recognise the winners of the Reseller News Women in ICT Awards (WIICTA) 2020.

The Kiwi channel gathers for the 2020 Reseller News Women in ICT Awards
Leading female front runners honoured at the 2020 Reseller News Women in ICT Awards

Leading female front runners honoured at the 2020 Reseller News Women in ICT Awards

The leading female front runners of the New Zealand ICT industry joined together for the annual Reseller News Women in ICT Awards event at the Hilton in Auckland, during which hundreds of guests celebrated 13 outstanding individuals who won awards, chosen from more than 50 finalists representing over 30 organisations.

Leading female front runners honoured at the 2020 Reseller News Women in ICT Awards
Show Comments