My IPhone4 4.0.1 has been JB/Unlocked and save the shsh via Cydia but my phone locked up due some incompatible apps. Which lead me to perform the factory resetting all setting and I thought the shsh is save. After the factory reset, the phone got stuck with the apple logo and the only way to get out of it is by upgrade to 4.0.2. After upgrade to 4.0.2 and find out I cannot downgrade to 4.0.1 even with shsh save under Cydia.

Anyone with any luck downgrade IPhone 4 4.0.2 to 4.0.1 and let me know what is the proper step to take.

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