Hello, Firstly I'd like to say I'm not looking for someone to mod this BIOS for me, I prefer to learn why things don't work sometimes and figure it out myself. I've used the tools on this forum many times in the past to mod BIOS's and never really had an issue to speak of, but for this Sony VAIO VGN-FE41S I am not achieving success. I'm using the latest Phoenix Tool, latest BIOS and have tried both Dynamic and Static methods but no matter what I do, I find that SLIC Toolkit says that the RSDT Table ID is != (Not Matching). It reads as "Sony RSDT" instead of the expected "SonyVAIO". The SLIC table inserted ok and it's PubKey/Marker are matching (both "SonyVAIO"). I read something about "Split ID's" in other threads but I'm not sure what this means. I'd love for someone with the knowledge to explain this to me. Incidentally I did try checking that option (replace split id's) in the advanced panel of Phoenix Tool but this didn't appear make a difference. The unpacked BIOSCOD1.ROM (which I assume is where the RSDT table should reside) does contains the RSDT tag, but string "SonyVAIO" doesn't follow it. Instead there's "PTLTD RSDT". This makes me think that PTLTD gets replaced by the string "Sony" dynamically? Maybe this is what Split Id's are all about?? Anyway hoping someone can shed some light on this. As you can probably tell I much rather enjoy tinkering and figuring stuff out myself if possible, I fix PC's for a living so I don't care if I brick it, I can soon revive it with BIOS chip flasher. If I had access to the Phoenix BIOS documentation and a bit more understanding I might be inclined to jump in and start hex editing the Table ID! Thanks, James.