What does 2x4all means?

Hi, I have just downloaded Pioneer DVR-104/A04 v1.40 firmware from http://firmwares.co.uk/ and it says in the readme file:
RPC-1 only and RPC-1 + 2x4all patch

What does 2x4all mean?

It means that any media will be allowed to burn at 2x even if it is only a 1x disk. This can be a good or a bad thing. Some 1x media works at 2x, other 1x media doesn’t. Without the 2x4all patch, the drive decides what speed a disk can handle.

By reading forum posts, I know Ritek RWs are able to handle 2x writing speed. Does Verbatim DVD-RW v1.1 works at 2x also?

Originally posted by sys202
By reading forum posts, I know Ritek RWs are able to handle 2x writing speed. Does Verbatim DVD-RW v1.1 works at 2x also?

You mean DVD-RW rewritable media. 2x DVD-RW media are very expensive for the time being and it is very dangerous or very impossible to “overclock” the 1x speed to 2x with 1x-rated DVD-RW media. You can use $1.5 Ritek DVD+RW 2.4x media with Sony DRU/X-500/510 or NEC ND-1x00 or Ricoh MP5xxx drive.

2x4all is only for -R disks right now. It does not apply to -RW media.