According to the official release notes from IsoBuster, this build introduced several technical enhancements:
is a specialized data recovery software version released on December 20, 2021, by Smart Projects . It is designed to rescue lost files from a vast range of damaged or unreadable storage media, including optical discs (CD, DVD, Blu-ray), hard drives, SSDs, and USB flash drives. Key Features and Improvements in Version 4.9
: Enhanced GPT partition table parsing, which utilizes backup tables to locate partitions on HDDs, SSDs, or USB sticks even when the primary table is damaged.