I bricked my MB with turning HT off, so i never flashed it again and don't have copy of it. Bootblock recovery didnt worked, so i RMD and they changed the MB. I can give you locked bios with undervolted HD5650 vBios to 0.9v in 3D.
As i understood you correctly, you flashed your laptop with the unlocked bios Insyde v1.23 for Acer Travelmate 5740 and got a brick immediatly? Or the laptop stared and passed CMOS check? - Was this bios mod done by TTAV134? I need the bios mod to get to memory remap feature. Have you seen this option in the unlocked menus?