Found at youtube comments. anyone else can check is it true?
OWNED: requirements: grafs kernel, ps3dm-utils and linux_hv_scripts
to patch your DM you have to run dmpatch.sh
read QA flag:
ps3dm_um /dev/ps3dmproxy read_eprom 0x48C0A
it should return 0xFF on retail ps3. just set it to 0x00
write QA flag: <- on your own risk!
ps3dm_um /dev/ps3dmproxy write_eprom 0x48C0A 0x00
ps3dm_um /dev/ps3dmproxy write_eprom 0x48C0A 0xFF
its a very mighty tool. you can also enable product mode and other things.