No keys found for kernel about iphone-dataprotection HOT 7 CLOSED

iPhone 4S and iPad 2 are not supported, sorry.

Oops!  Thanks for your reply.  May I ask if you guys would have a plan on 
covering iPhone 4S and iPad 2?  Btw, I still have one question regarding this 
issue.  Please help.  It should be fine for me to point redsn0w_mac_0.9.9b8 to 
iPhone4,1_5.0_9A334_Restore.ipsw.  It should not be related to the phone.  Why 
"No keys found for kernel"?

Thanks!!!!

Support for those devices is not planned. The firmware encryption keys for 
these devices are not known (and thus not in the redsn0w Keys.plist file)  
because no bootloader-level vulnerability (required to get the encryption keys) 
has been found yet for A5 devices.

Now that the keys are out for those devices, do you plan on adding support?

AFAIK the encryption keys for those devices are not available, at least not on 
theiphonewiki ?
However, if you can jailbreak the device, you can use the tools, see issue 49

May I ask if iOS 4/ 5 on iPhone 4S/ 5 are supported now?

@kwanhung nope, afaik there is still no way to boot unsigned code on those 
devices.