Originally Posted by Wadester
Hmm... not sure how it's finding the update.zip file and starting the update process if you removed the SD card?
I've been reading about restoring a phone with a PC36IMG.ZIP file in the root of the SD card and how it can restore your phone if all else fails, but I don't know much about it yet.
You might be better off taking it to a Sprint store that has a Service Center. Good luck.
Sorry, I was unclear. I took my SD out and redownloaded and renamed the update.zip file and put it back in the phone, and that's when it found it and proceeded to update, though the mounting errors still existed. I've also heard about restoring that way and am not sure what is the difference between going that route with the pc36IMG, going into the bootloader and wiping the cache, or doing a wipe/delete data in the bootloader. It looks like those are my only options. I will be taking it to a sprint repair center tomorrow, many thanks!