triturbo

Certainly, I love upgrades

Thanks, but I have tried it, it's not working. I dig some more, found other notebooks with this GPU, and their schematics as well, and on some there's no connection at this points, so I REALLY hope that it's BIOS related

Sadly almost 3 months and still nothing, the guy is busy and etc. I guess there aren't many people that are willing to deal with my stupid things. He was the only one who was willing to swap the cores, and now even he's out, so I guess, I'm on my own.

The vBIOS is still not flashable. It recognises the thumb drive, as before, but that's it. Should I try with a different version of nvflash?

Using the "flipped"* version of this image, and this schematic, I have found out what the additional 4 balls do:

G16 - FBC_DEBUG1 R154 10K/J_4_NC /// Mem I/F C FBB_DEBUG1 
G20 - VMC_CMD31   TP12           /// Mem I/F C FBB_CMD31 
T29 - FBA_DEBUG1 R196 10K/J_4_NC /// Mem I/F A FBA_DEBUG1 
Y29 - VMA_CMD31   TP22           /// Mem I/F A FBA_CMD31

G20 and Y29 are leading to TP (Test Point?), so I guess they can stay disconnected. G16 and T29 are obviously for debugging, and there are resistors before they hit the ground. What difference could it make if there are no resistors, as it is now?

*I got it wrong since there's nothing related to the graphics chip at AJ16, AJ20, Y7, and T7. Also, comparing few boards, I have found out that there is no "I", or "AI" in the BGA row/column designation. Am I wrong?

Finally, what kind of programmer I'll need in order to flash the various vBIOSes? The chips is

Atmel 924
25F512AN
SU27

Thanks to whoever gives an answer to all of this

So it should look like this:

beep

C:\nvflash -r -4 -5 -6 -A dell1.rom


beep

This is the autoexec that I was using, and I'm sure that the priority is set to USB first:

beep

C:\nvflash -4 -5 -6 -A dell1.rom


beep

When I put it in my ATi machine it writes "No nVIDIA adapter was found" or something along the lines and beeps. It doesn't beep at all in the other machine. I'll give it another go, but I don't think that it's going to work.

Yes, GT 550m core to GT 240m MXM-II board. The architectures are different, but the BGA package is the same, well almost, GT 550m has 4 more balls. Why I tried - last attempt to bring some live in my 5+ year old 5920G, and it's 16:10, that matters. No, it's not free

I've also read long ago that some GTX 280m MXM-HE was able to run with GTX 280m MXM-B vBIOS and that it was the only way to run it in some laptop. This gave me some hopes as well Otherwise, yeah, I knew that it's pretty much impossible and that MXM 2.1 and MXM 3.0 are different standards and probably different signaling. BUT the fact that it POSTs and even boots got me more than surprised So now I want to check every posibility to properly output to internal.

My initial plans were for HD6730 MXM-II - HD6770 core (6770/6730 has the same core, different memory) and HD4650 MXM-II board - 1:1 match in the BGA. I ditched it because of the more parts I had to buy and the lack of HD6730 vBIOS, also as I said, I overlooked the additional 4 balls on GT 550m's core

I've used GT 240m as a base, and GT 550m core. I kinda overlooked that GT 550m's core has 4 more balls in its BGA. When the guy that was about to swap the cores told me, I decided to give it a go anyway. He also has flashed Lenovo Y470 vBIOS (thanks to a guy of MDL). The result: it outputs mixed/scrambled color matrix (and stays like this) only through VGA, no digital output so far - internal display/HDMI. I can hear the Windows loading sound. It can't be blind flashed, and I'm sure that the USB thumb drive is OK and properly set. I'm going to try different vBIOSes later this week with his programmer. Possible Optimus interuption or something? Is it possible to make OptimusLESS (or disabled) vBIOS? I read somwhere that upgrade to 7970 had similar issue, and once flashed with Clevo vBIOS (Enduro disabled) it booted just fine. I'm probably going tomorrow, the guy lives 100+ miles away in one direction, so I want to be prepared as much as I can. I already have a handful of vBIOSes thanks to Prema (N43SN), capitankasar (l502x), Sharadeos (l702x) and a Quadro 1000m. Waiting niffcreature for MXM GT 540m vBIOS. Your input is greatly apreceated. I'll make a guide if it turns out successful. Fingers crossed

I'm A LOT late, sorry. Here you areM86.zip Edit it with RBE, save it as .rom, you can change the voltages at later time and etc. It's HP GPU but it boots just fine in my 5920G.

Actually it's not, but he needs ATiFlash or ATiWinFlash for the task.

My HD3650 256MB GDDR3 machine is away, so you'll have to wait couple of days if you want mine. There are couple of vBIOSes around if you want to give the a go. Check those:

Acer VBios for ATI Mobility Radeon HD 3650 - Page 4 - Official MXM-Upgrade.com Forum - LaptopVideo2Go Forums

NBR Mobile Video Bios Database

I do have HD3650 512MB DDR2 and HD3650 256MB GDDR3, but I don't think that either one is going to work for you. Another not-so-smart one - are you sure it's DDR2? You can check the serial number of the vRAM and make sure which type it is.

Great mod! One question, how did you unsolder the shim - heatgun, BGA reflow station?

It could sound silly, but have you cleaned the nVIDIA drivers?