toggle

AAPL Stock: 124.24 ( + 0.86 )

Printed from http://www.macnn.com

redsn0w update lets users downgrade A5 devices

updated 11:36 am EDT, Mon May 14, 2012

Reverses upgrades to iOS 5.1.1

The unofficial iPhone Dev Team has released a new version of redsn0w, its jailbreaking utility for iOS devices. The v0.9.11b4 update lets users restore old IPSW files to A5-based Apple devices, including the iPhone 4S, third-generation iPad, and iPad 2; previously, only devices prior to the iPad 2 could be downgraded, thanks to the limera1n exploit. The update means that A5 devices can now be downgraded from iOS 5.1.1 or 5.1 to 5.0.1.

A number of catches are in place. People must for instance have SHSH blobs associated with the earlier firmware, captured either through TinyUmbrella or Cydia's TSS@Home. Remote or local blobs can be used. The Dev Team also notes that the downgrade process actually updates to the latest firmware before downgrading, updating baseband at the same time, which will ruin most unofficial unlocks of the iPhone 4S except temporary SAM techniques. Apple should moreover be able to fix the exploit used for A5 downgrades, as reverse engineering shows the company is already aware of it.




by MacNN Staff

POST TOOLS:

TAGS :

toggle

Comments

Login Here

Not a member of the MacNN forums? Register now for free.

toggle

Network Headlines

toggle

Most Popular

Advertisement

Recent Reviews

Seagate Wireless

It seems like no matter how much internal storage is included today's mobile devices, we, as users, will always find a way to fill th ...

Brother HL-L8250CDN Color Laser Printer

When it comes to selecting a printer, the process is not exactly something most people put a lot of thought into. Printers are often t ...

Moshi iVisor AG and XT for iPad Air 2

Have you ever tried to put in a screen protector that relies on static to cling to the screen? How many bubbles and wrinkles does it h ...

toggle

Most Commented