Kormaster look at this which I found on there web site.
"NO returns on any chip which has been removed from its packaging.
Clips can not be returned, we refuse to resell such devices to ensure quality.
In the event of a bios or product conflict with product ordered shipping will be at the expense of the customer for any exchange or replacement. We reserve the right to charge a restocking fee on any exchange or returned product for any reason Check your bios if you have a version 1 or 2 as some of the very first machines had a bios with ending in a 010 which it will not work on .
Puchase at your own risk."
PS2 NTSC U/C v9 w/DMS3v9 Firmware v2.2
PS3 NTSC JP 20GB HDD
PSP NTSC JP