...This is triggered when large amounts of data are written to the drive at one like during a backup sequence or typical 30-100GB folder transfer of something like photos or videos.
...
I will never buy a SanDisk product again because of how they responded. No help at all and liquidation of existing inventory they know is faulty. Failures happen. But to know you have a faulty product on the market and not offer free recovery services? They were providing replacement drives THAT ALSO FAILED!! They actually gave some people replacement drives from the product sequence that had the same exact problem.
This was my experience as well with the Extreme 4TB SSD. Original and replacement had the same issue.
When I saw the patch, I confirmed my S/N was affected and applied it.
However, even after a full repartition and format, new data copied to the drive eventually causes device errors until it slows to a crawl. Large files seemed to be the worst offenders.
So ok, maybe the data won't corrupt anymore, but the drive becomes unusable with this new firmware.
I'm now going through the RMA process to get a new SSD (this would be the third one).