The iPad in my experience is very picky about what cables it will restore with. Error 9 is almost always related to the cable, NOT the dock connector/flex cable. Use the official Apple cable if you still have it, or borrow one from a friend.
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If that doesn't work, it might also have something to do with the IPSW you are trying to restore with. Try using a different IPSW or using redsn0w to boot pwned dfu mode and restore like that. It could be this because error 9 can be related to the ramdisk kernel rejecting the ASR because it is not signed properly, thus breaking the connection with the device and causing error 9.
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If that doesn't work, it might also have something to do with the IPSW you are trying to restore with. Try using a different IPSW or using Redsn0w to boot Pwned DFU mode and restore it like that. Error 9 can be related to the RAM disk kernel rejecting the ASR because it is not signed properly, thus breaking the connection with the device and causing error 9.
The iPad in my experience is very picky about what cables it will restore with. Error 9 is almost always related to the cable, NOT the dock connector/flex cable. Use the official Apple cable if you still have it, or borrow one from a friend.
If that doesn't work, it might also have something to do with the IPSW you are trying to restore with. Try using a different IPSW or using redsn0w to boot pwned dfu mode and restore like that. It could be this because error 9 can be related to the ramdisk kernel rejecting the ASR because it is not signed properly, thus breaking the connection with the device and causing error 9.