The lower-level APIs on the iPhone (those used by the tool chain) can now be used with the Apple SDK per instructions in my blog here: http://www.zdziarski.com. Of course, this will likely disqualify you from using the AppStore, but if you need some of the restricted features like being able to suspend/resume, it may be useful. As expected, the lower level APIs are relatively the same as they were in 1.1, so you should be able to compile most existing "tool chain" applications with little-to-no code changes.

Thanks. It is very useful. Although the official SDK is very powerful. Apple restricts too much on it that make it is almost impossible to build some useful applications. So can we debug "tool chain" api under xcode?

I think this is a very overstated opinion...

This is wonderful news!

Can someone more enlighted explain in more depth, what is going on?
I suppose i can use Aspen for building and debuging applications, and release apps (without intervenience of Apple) for jailbroken iphones? Somebody please do a step-by-step blog on this.

Nice work!

Does that mean that I can compile Applications written with the official SDK for FW earlier than 1.2.0?

And doesn't it replace the open source toolchain, or what's the advantage of using the open source toolchain now?

No, the other way around - it lets you compile applications written for 1.0/1.1 to run on 1.2. In other words, it gives your applications access to the lower-level APIs used by the tool chain.

hum but jailbroken app were working on 1.2 firmware no?
u have to recompile them under SDK certificates?

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1) C2D E2160@3Ghz | MoBo: ASUS P5E-VM DO | Chipset: ICH9 | No Onboard LAN Intel | Wifi: NetGear WPN311 (recognized as Airport Extreme) | Sound: ALC883 but no 5.1 ch atm | Memory: 2 Gb RAM | Geforce 8600 GT 256 MB/CE/QI | HD: SATA 160GB | DVD : Pioneer 111L 40X/16X | OSX 10.5.2 pc efi v8

2) C2D E6600@3.53Ghz | MoBo: ASUS P5K | Wifi: RT2500USB | Sound: Onboard ALC883 | Memory: 2 Gb RAM | GeForce 8800GT 512 MB/CE/QI | HD: SAMSUNG SATA-II 500GB | DVD : Pioneer 111L 40X/16X | OSX 10.5.2 pc efi v8

If you are jailbroken, there is no need for a certificate. We also have a SpringBoard patch that prevents it from killing off unauthorized applications. Prior to our updating the tool chain / Apple SDK headers, you could not just recompile an existing application, because 1.2 uses (among other things) a new entry point for applications, and ABI version 2 in its dynamic linker. We've updated the tool chain to support all of this, however, so you now can recompile your applications, with few-to-no changes.

In terms of what this does for the Apple SDK, these headers / compiler flag changes allow you to build apps using the lower-level APIs that Apple has turned off for the SDK. Frameworks such as Celestial, GraphicsServices, etc., are unavailable to the SDK. This will allow you to build apps that use them.

i clearly understand. So if u havent found this solution the jailbroken was really disabled by apple as they claimed a few weeks ago great job.
So we can imagine a new fresh installer such as cydia (that I support at 100%) that will provide "jailbrokensdk" apps.
Im wondering if official games such as SMB could be leeched from applestore then sent from iPhone via SSH to MAC. Then from a MAC to an jailbroken iPhone and would work?

In conclusion this mean everybody is gonna need to rewrite his own application for 1.2 compliance. I hope SIPHONE and MMSiPhone will be upgraded

__________________
1) C2D E2160@3Ghz | MoBo: ASUS P5E-VM DO | Chipset: ICH9 | No Onboard LAN Intel | Wifi: NetGear WPN311 (recognized as Airport Extreme) | Sound: ALC883 but no 5.1 ch atm | Memory: 2 Gb RAM | Geforce 8600 GT 256 MB/CE/QI | HD: SATA 160GB | DVD : Pioneer 111L 40X/16X | OSX 10.5.2 pc efi v8

2) C2D E6600@3.53Ghz | MoBo: ASUS P5K | Wifi: RT2500USB | Sound: Onboard ALC883 | Memory: 2 Gb RAM | GeForce 8800GT 512 MB/CE/QI | HD: SAMSUNG SATA-II 500GB | DVD : Pioneer 111L 40X/16X | OSX 10.5.2 pc efi v8

NerveGas, u r a bit late with it, i made same when was porting anysim to sdk, but it wasn't good idea, app didn't work well in simulatore (no slider working) and didn't work at all on iphone, maybe i did smth wrong, so i rewrote it to use only sdk headers