Pioneer 111D Firmware Upgraded now problems

Hi guys just upgraded my pioneer dvd drive to 1.29 from 1.23 from the offical website.

Been burning ritek and tdk discs fine . Since updating i burned 3 discs and 2 failed within the first few percent. Only burning at 4x speed using nero.

Any ideas as to what my problem is please.

Thanks

Sorry wrong forum moving…