Originally Posted by zideeq
Hmm, too many variables to troubleshoot.
First have a look at this old post, it just may have your answer:
I'm thinking perhaps there is a conflict in relation to IDE/SATA and/or Single Laser, etc. Then again perhaps a ribbon has been damaged, etc.
Have a check with that thread and let me know if you can work anything out because to be honest there really is a lot of possibilities to the cause at this moment. We need to dig deep!
Well someone already confirmed that they got a checha01 working on a chechg01. So i don't think it is a compatibility issue. I havent tried the 2.30 ps3updat yet, since ps3devwiki said it doesn't really matter as long as it is equal or less than 3.30. I will try it with 2.30 and see if it makes a difference.