it worked. i have bought a dcsd cable and used it.
1. First of all: Click on "Get Activation no change sn"
2. if the ipad does boot if you try to pwndfu, then you have to bring it to dfu mode and open devicemanager.
3. look at the device manager. it will show up apple mobile usb device. click on it and change the driver to "apple recovery usb driver".
4. Now try the pwndfu after you put your ipad in dfu mode.
5. when its done, run ramdisk.
6. when it is in ramdisk mode click on bypass hello and its done.