Hi

Thanks for pics and info! Ok, changes thinks, as you can read something!

Before you thinking about the firmware update, etc.. think about coping/backup the NANDs?

Have you tried the "freezer trick"? (SSD in a plastic bag so no humidity gets to the device!!)
Like Base16 wrote? Read this: https://www.backblaze.com/blog/ssd-troubleshooting/#comment-3130139848

Demoing first, with an old/demo SSD.

Bye