The Coby MID9742 is a tablet running on the Allwinner A10 (cortex 8) CPU.
Go over to this other site. The devloper is sure he has the Root for the (_ _42) tablets.
He's tried it on his own, Allwinner Tablet. It Worked. Wants to further test with a Bricked MID9742. ( thought of you :-)
He's UpLoading the Restore image Now. Good Luck.
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