Update the firmware
Go to Lenovo Datacenter Support site for the latest firmware update package.
To update the firmware from a flash device, complete the following steps:
Go to Lenovo Support - ST50 V2 (including drivers and software). All the downloadable firmware packages for ST50 V2 are available on this site.
Download the latest version of firmware update packages.
Follow the instructions enclosed in the package to update the firmware.
Perform the firmware update in operating system accordingly to the instructions.