Mitsumi released firmware updates this month for their CR-4805TE internal Cd-rw drive and the CR-4804TU/CR-4824TU USB units.
CR-4805TE firmware update to v1.6A
-Improved readability.
-Improved drive recognition.
-Improved CD Speed99 blank length.
CR-4804TU/CR-4824TU firmware updates to v3.047
-Supports LINUX OS.
-Improved CD playing feature
Source: Mitsumi USA