A bit later than i would have liked but here you go guys..
REBUG 4.30.1 STANDARD
REBUG 4.21.2 REX EDITION
REBUG 3.55.4 REX EDITION
All PUP include the updated REBUG TOOLBOX 02.01.00 and have the PS2 loading issue fixed and we are happy to say we have patched 'undocumented function 114' to allow mapping of protected memory.
Also 4.30.1 is the first true 4.30 CFW/MFW that does NOT use any files from 4.2x firmware inside lv0 (lv1ldr to be specific).
The original post has been updated.. Enjoy