I got unknown error 21 on iTunes when I try to restore my Ipad2
It all started when I was deleting an e-mail (from an uknown adress), then Mail was closing and I went back to my homescreen.
Suddenly I see that all my purchased apps where gone, only shortcuts to Safari and the original Apple programs were in place.
Then I tried to push the home and the power button to restart the device, it turns back on again without any affect.
I connect my Ipad to the Mac Pro running OSX 10.6.8. and open iTunes, then I tried to recover a safety copy from the list, without any luck.
The result of this ends with a device showing just the Apple logo a while, and then the iTunes wire.
The problem with showing "unknown error 21" in iTunes seems to be a usual Windows third-party issue, but I`m running it on a Mac.
I tried all basic steps in the Apple support, but it still came back with the message: "detected iPad in recovery mode...you will have to restore it before it can be used with iTune", and then a message that tells me the Ipad device can not me restored, unknown error 21.
I have no firewall, the time is correct, I`m running the latest iTunes version 10.6.1, I can connect to the iTunes store and it looks okey.
I connected the original 30-pins connector on the back, unpluging all other USB-devices, I checked this and several other things, but I just can`t get it to work.
Before it turned into this "Brick" I noticed that the indication on used memory for programs (green) went down to zero,
and "other" (yellow) were the biggest area ( app.14 GB )
HELP !
iPad 2 Wi-Fi, iOS 5.1, Mac Pro OsX 10.6.8 iTunes 10.6.