I just installed a 2.6 on a 1.5 xbox. the problem is that when the chip is enabled the Microsoft bios appears it does not frag with the chip enabled or disabled. The blue LED on the chip is turned on when the chip is enabled. I tested the chip itself on another xbox and the cromwell boots up so i know that the chip is ok. I have gone ahead and cheaked the lpc and d0 point solder points. Any ideas will be appreciated.