Latest versions and updatesThe latest driver and firmware versions for these units are as follows.WindowsDriver: 1.00rc2Firmware: 1.00d1 (no new update)Mac OS XDriver: 3.01 (Now updated from version 3.00d18)Firmware: 1.00 d1(no new update)Always ensure that you are running the latest driver software and firmware by visiting TASCAM’s web site (http://tascam.com/).Important NoticeWhenever updating drivers, previous drivers for this product should be uninstalled first.Please turn on the unit (US-1200) after the computer is turned on.Maintenance itemsFor Mac OS X Driver Version 3.01・ A problem where the Meter display on the Mixer panel might stop working when the Mixer Mode was changed has been fixed.・ A problem where the computer audio would become garbled after the Mixer Mode was changed has been fixed.・ A problem where turning off the US-1200 while the Mixer panel was active would cause the computer to freeze has been fixed.TASCAM US-1200 1Firmware: 1.00d1, Windows Driver: 1.00rc2, Mac OS X Driver: 3.01D01228420DUS-1200