Originally Posted by
Sameer Manek is that possible that downgrade firmware any older version which have usb mass storge for internal memory than i can recover?
Flashing an older ROM (or any ROM), which is how you'd downgrade, would wipe out
all the information on the phone.
Even if you had mass storage, you can't recover deleted files without physical access to the storage device - the internal storage of the phone in this case. That means an app running in the phone. PC programs can physically access SD cards plugged into the PC, they can't physically access phones plugged into the USB port.
That's why backing up should be a religion. Back up
at least once a week. (I make a backup for every major change, or every time I take a few pictures. 3TB of storage is cheap.