so i have a 3g 16gb iphone i bought and it was previously on 3.1.3 and was trying to be upgraded to 4.0 the phone went into a boot loop. Thats why i bought the phone cheap figuring it would be a easy dfu restore fix. This however is not the case. Ive tried to downgrade to 3.1.2, 3.1.3 and 4.0. 3.x puts me into a recovery loop which ive tried irecovery and other tools and it wont break out of recovery. Then 4.0 puts me into a boot loop. So i put the phone into dfu and used redsnow to break 4.0 and it swod's on installing activation bundles for about 5 minutes and resets back into its apple logo boot loop. Any help here??