loading ramstick no image

[sibe323]

Device: ipad mini cellar
sliver 6.2
I have everything setup right I uploaded the exploit onto the ardino no errors . plug device in 3 blinks then ... 3 seconds later solid indicator light.
unplug the ardino , plug device into Mac.. itunes pops up saying recovery(dfu mode) close itunes load the ramm disk standard ( I've tried all 3 rebooting device everytime) No image pops up . so I'm kind of stumped. is it the checkm8 a5 wrong one I'm using? is it my device or is it sliver?

pleaseeee help I've tried many times and used different kinds of checkm8 a5master and other versions of sliver .