How to recover data from an unreadable flash drive?

Question

linux

It is possible that the volume was determined correctly (2GB is written on the flash drive)

Answer 1

remove the image from the flash drive and try to feed testdisk recovery_data

Answer 2

First of all, take the image. in the recovery process to estimate the amount of losses.
do everything else with the image. To remove the image, I can offer ddrescue.
next - r-studio and r-lab products

Answer 3

You can try photorec. Despite the name, it restores not only photos.