Just a tip...
If you're trying BIOS code from other machines, you really should run MODBIN to give some "sane" Setup/BIOS Defaults. (Just in case the CMOS contents aren't accepted by the test-BIOS. Set "Halt on No Errors", and try to enable Simultaneous-Display mode.
It's very helpful to hook up a VGA monitor to CN10.. that way, if the LCD doesn't work and Simultaneous-Display is enabled, you'll be able to see something useful.
Always keep a known-good BIOS chip on standby, so you can use the IOpener if a BIOS fails.
About the Advantech BIOS... it often (not always) works without modification (using VGA monitor on CN10) if you do this procedure:
1. Remove CMOS Battery for a minute, then re-insert Battery. (Just wanna clear the CMOS out)
2. Boot with IOpener BIOS, let it re-initialize CMOS. DO NOT Manual-Adjust any BIOS Settings.
3. Hot-swap BIOS chip with the Advantech BIOS.
4. Reboot. (Soft-Reboot, or Reset Button preferred)
5. Watch the VGA monitor. Repeatedly Press <DEL> slowly, to try and get into BIOS Setup Screen.
6. At this point, you should be able to go to "Integrated Peripherals" and set the Video accordingly. You DEFINITELY want to turn "Simultaneous" on -- otherwise, when you reboot, you'll see nothing on the VGA monitor, and you'll be at the mercy of guessing if the LCD will work.
Now, it's important to note that the Hybrid-BIOS I built uses IOpener Code for the Video Initialization. This was done to get DSTN operational. (I never got the plain Advantech BIOS to display on the IOpener's DSTN). It's very likely that using the Hybrid will cause TFT to fail because it has IOpener-Specific code; and it may be why we never got a fully operational TFT working yet... Hopefully with this "Pure Advantech" procedure, you'll have better luck getting TFT working.