iphone 4 stuck on pineapple logo on redsnow tethered reboot

iphone 4 stuck on pineapple logo on redsnow tethered reboot
location: macrumors.com - date: December 27, 2010
please help if anyone has any suggestions: iphone 4 was updated from 4.1 and 1.59 baseband to 4.2.1 and was able to preserve baseband by pointing to cydia hosts file, and also keeping tinyumbrella open. funny thing is none of my apps were erased or music or anything else, just an incremental update like upgrading windows from service pack 1 to 2. installed cydia using redsnow and saw that the cydia installed on reboot but all i saw was a white icon. So tried the second part of process where i check off the boot tethered for now and rebooted my iphone 4 but it is always stuck on pineapple logo with apply busy spinning wheel on top. here is what i tried: ran redsnow in compatibility mode both XP sp2 and XP sp3 ran Redsnow in administrator mode ran redsnow in compatibility mode and admin mode ran redsnow with affinity set to 1 via the task manager none of them work, i have windows 7 64 bit and i am open to a
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