The best way to recover deleted photos from usb flash drive is to use a usb data recovery software. You can download usb data recovery software for free from: pen drive data recovery software
The data recovery softwrae can efficiently recover lost or deleted files including videos, audios, and pictures from your system, pen drive, memory cards, digital cameras, and all kinds of internal and external hard drives. Apart from this, you can recover MXF movies. Also, HD-MOV files and Adobe EPS files can be recovered by utilising the tool.
You can recover lost or deleted photos and videos from all pen drives after it has been deleted accidentally. Data can be recovered and reinstated from almost all types of corrupted or formatted pen drive. The Photo Recovery software can be used over multiple file systems over multiple devices. These file systems include FAT32, ExFAT, NTFS, etc.