DJ13 you mean? Well someone already asked for it (but I suspect you already know that, hence the mixup in firmware versions ) but I don't know if TDB have noticed it :
http://club.cdfreaks.com/showthread.php?t=176366 (post #12)
For best results it might be a good idea to post a request in RPC1's forum, under their "request firmware" section.
An anti-riplock version of DJ13, which doesn't require interrupting a flash midway in order to use would really be something.