Fixing Samsung SSD 840 EVO performance issues in Linux | Yktoo
Samsung SSD 840 EVO 2.5" SATA III 120GB - MZ-7TE120BW - Update Software (Firmware) ver. 1.0 - DOS (MULTI LANGUAGE,0.09 MB) ? Dos version for MAC, Linux users
Samsung's 840 Evo repair tool available to download, but be careful of the caveats when you update - ExtremeTech
Firmware update Samsung SSD in Linux - Intermittent Technology