From the release page, it says
INSTALL:
From XMB install REBUG 4.21.x AND HIGHER over any 3.55 OFW/CFW/MFW or the same or lower firmware version CFW with spkg sig check patched or any firmware version CFW with spkg sig check patched and QA enabled.
From XMB install REBUG 4.21.x AND HIGHER over 4.82 OFW, Please follow this guide available via PSX-PLACE, Team PS3Xploit recently released a software solution for “hack-able PS3 models excluding CECH-3XXX and 4XXX”.
It seems they are expecting it to be
CFW that is 3.55 or lower
OFW that is 4.82,
But not 4.82CFW?
INSTALL:
From XMB install REBUG 4.21.x AND HIGHER over any 3.55 OFW/CFW/MFW or the same or lower firmware version CFW with spkg sig check patched or any firmware version CFW with spkg sig check patched and QA enabled.
From XMB install REBUG 4.21.x AND HIGHER over 4.82 OFW, Please follow this guide available via PSX-PLACE, Team PS3Xploit recently released a software solution for “hack-able PS3 models excluding CECH-3XXX and 4XXX”.
It seems they are expecting it to be
CFW that is 3.55 or lower
OFW that is 4.82,
But not 4.82CFW?