Itouch Flash Mem

I have a 4th gen ipod touch that I would like to turn into a usb flash drive.
I have read that you cannot do this without software or jailbreaking.

I cannot jailbreak it and use an app as the screen is busted. I attempted to take off the screen and reattach the screen cord as I had the white screen of death. During this process I updated the firmware.
Before this update I was able to access the photos in folder form no problem, so I figured making it a flash drive after updating would be a cake walk.
My question is why does everyone say it's not possible when I was able to open it up like a flash drive before? would it have only accepted photo storage or something?:confused:

Since I no longer plan to use this as an ipod or anything can I bypass Apple's restrictions on disk mode and reformat it to be a flash drive somehow?

Thanks,
Mitchell

p.s. Ideally I'd like to not use software to have to transfer files as it would be nice to have 32gb storage to take and use on multiple computers without installing software (ex: like on a friends computer)

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