Mikaey's Flash Stress Test is a program to stress test flash media to the
point of failure -- and possibly beyond. It detects whether a storage
device is fake flash, speed tests the device, and stress tests it.
Enable snaps on Kubuntu and install Mikaey's Flash Stress Test
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.