This is a common hallmark of cheap, fake SD cards (often branded as Kingston or SanDisk but bought from unreliable sellers). These cards are programmed to report a high capacity (like 128 GB) but actually contain much smaller, low-quality chips that crash once they reach their true capacity, often reverting to showing uupd.bin .
Linux users can attempt recovery with tools like testdisk , ddrescue , or gparted . However, even these advanced tools often report only the reduced capacity. uupdbin sd card
sync sudo umount /dev/sdX
When working with specialized deployment tools, single-board computers (like the Raspberry Pi running Windows on ARM), or thin clients, these binaries are written directly to storage media like SD cards to serve as installation or boot drives. Why Use an SD Card for UUPDBIN Deployments? This is a common hallmark of cheap, fake