There are two versions of [url=http://www.plextor.be/English/technical/downld_firmw_4012TA.html]v1.01 available for the 40x. The self extracting version (579k) will run by itself, the smaller binary only version (170k) needs a [url=http://www.plextor.be/English/technical/downld_firmw_prog.html]Firmware installer.
Plextor recommend that DMA be switched off & the PC rebooted prior to flashing the firmware.
DMA off
Reboot
Flash Firmware
DMA on
Reboot
Also you should shut down all other apps except systray & explorer & disable anything that could interrupt the process like screen savers, power savers & anti-virus software.
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