Yes
Yes you have to have Xbox live to update your flash drive.
No, It will not save game memory.
You can format and use a USB flash drive as an Xbox 360 storage device and store up to 2 terabytes (TB) of content.
If it is compatible for Xbox 360 then you should be able to use it for the Xbox one. There shouldn't be any issues.
yes it is
No because xbox do not have windows
For Grand Theft Auto: V, there will be an initial install on Xbox 360 that will require an Xbox 360 Hard Drive or an external 16GB USB flash drive with at least 8 GB of free space. If using a USB flash drive it must be at least USB 2.0 with a minimum 15mb/s read speed and formatted for Xbox 360 use. A new USB flash drive is recommended to ensure optimum performance.
You can't transfer files on xbox 360 using a usb thumb drive, but you can if you buy a xbox 360 memory card
no you could use modio for your xbox 360 with a flash drive
You can.
yes, you can. you can copy music to the xbox 360
of coarse this person has no idea what hes talking about, xbox 360 got rid of the proprietary memory cards with the slim, you must have a usb flash drive or hard drive to use your gamertag on the go