A new firmware for tha A05 series was released somedays ago. The new firmware fixes many problems with unbranded DVD-R/RW media and the from the change's log:
DVD-R/RW Writability Improvement
DVD-R/RW Playability Improvement
CD-R/RW Writability Improvement
CD-R/RW Playability Improvement
Surpport 2X writing on New Prodisc DVD-R Media
Click at the 'Source' Link to download!