AppleInsider Staff
"Devices updated to iOS 5 beta can not be restored to earlier versions of iOS," the Cupertino-based company reported wrote in an advisory to developers. "Devices will be able to upgrade to future beta releases and the final iOS 5 software."
The warning appears to indicate that developers opting to experiment and test their applications using iOS 5.0 on one of the company's iOS devices will be best advised make sure they install the software on a device solely dedicated to development purposes.
According to people familiar with the software, the note to developers accompanied the release of several pieces of pre-release software tied to iOS 5.0, including Xcode 4.2 Developer Preview (build 4C104 for Snow Leopard and 4D5031b for Lion), iTunes 5.0 beta (for activating iOS 5.0 on development devices), Apple TV Software beta (for mirroring content from an iPad 2 to an Apple TV over AirPlay), and iOS 5.0 itself (build 9A5220p).
Separately on Monday, Apple also equipped developers with Safari 5.1 Developer Preview and Mac OS X Lion Developer Preview 4 (build 11A480b), the latter of which contains about a half dozen known issues each for Mac OS X Lion and Mac OS X Lion Server.
Marko Zivkovic
Mike Wuerthele
Christine McKee
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29 Comments
Apple always publishes the warning that devices CANNOT be rolled back to previous versions of iOS, this is nothing new.
Of course, with previous betas you were able to get the devices to roll back, one way or another.
Challenge accepted, Apple.
Apple always publishes the warning that devices CANNOT be rolled back to previous versions of iOS, this is nothing new.
Of course, with previous betas you were able to get the devices to roll back, one way or another.
While it's usually possible to roll back the firmware, I've never been able to rollback the baseband, which can lead to issues with WiFi and cellular radios. As such, I can't stress this enough, if you want to play around with an iOS 5 beta, GET A SEPARATE DEVICE!
While it's usually possible to roll back the firmware, I've never been able to rollback the baseband, which can lead to issues with WiFi and cellular radios. As such, I can't stress this enough, if you want to play around with an iOS 5 beta, GET A SEPARATE DEVICE!
Although the baseband can't be rolled back this has never presented any issues for me on the 3G, 3GS or iphone 4. The only thing it would stop you doing is Jailbreaking. Of course, I would not recommend running the beta on your main device and dagamer's advice stands.
While it's usually possible to roll back the firmware, I've never been able to rollback the baseband, which can lead to issues with WiFi and cellular radios. As such, I can't stress this enough, if you want to play around with an iOS 5 beta, GET A SEPARATE DEVICE!
Just rolling back the firmware is a little bit of a task, but I don't see too many problems for the people who want to play with it now.
But I say this as I'm currently downloading it Worse comes to worse though, I have another device to go to if all else fails. So what Dag said.