Lenovo M700/M900 BIOS mod to Coffee Lake CPUs

[mooms]

you need me cor sku and disabled.
you can attach your original bios, and i will do this mod for you.
coffee time have incompatible pcie patch for lenovo bios too.

What exactly is incompatible in this PCIe patch ?

Because it (seems to) works fine on mine.

 

[dsanke]

What exactly is incompatible in this PCIe patch ?

Because it (seems to) works fine on mine.

you dont have pcie x16 slot. if you have, you will know.

 

[mooms]

you dont have pcie x16 slot. if you have, you will know.

I see, thanks for your answer.
So for M710Q/M910Q, there is no downside for using CoffeeTime, isn't it ?

 

[Mixermachine]

mod-jimmyl.zip

drive.google.com

Thanks a lot dsanke.
For some reason my CoffeeTime mod did not work.
The ME-Version was always staying the same even after I hit "replace".

With your modded BIOS here and cycling the BIOS battery my "new" i3-9100t works well.
Spent 25€ on the CPU and 13€ on the CH341a programmer.
Now my JellyFin 4k 10 Bit videos are transcoding without any issues on the iGPU.

 

[Adam130694]

I've successfully modded two M710Q the same way than the M910Q, and installed the same CPU (i5-9500).

They're almost exactly the same, the cooler are a bit different, they seems better built on the M710Q.

Here is a photo of the pinmod.


To make the bridge, I used copper tape, bought on Aliexpress. For insulation, I used Kapton tape (real one, not the fake sold on Aliexpress...).
I adjusted the copper tape a little after taking the photo, and it's fine now, both CPU are working perfectly.

Could you upload your bios?

What CPU cooler in M710q do you have (could you make photo of them)?

 

[mooms]

Could you upload your bios?

What CPU cooler in M710q do you have (could you make photo of them)?

I'm sorry, I don't have it anymore, but it's easy to do it again in CoffeeTime, and you will preserve the unique info so it's better this way.


M710Q:



M720Q:

 

[Adam130694]

And was that enough for i5-9500 (non-T)?

 

[mooms]

For M710Q, yes, for M720Q, see my post here: https://forums.servethehome.com/ind...yminimicro-reference-thread.34925/post-487482

 

[Sikeitdonkeykong]

Does anyone have a modded bios for a M700s? My bios chips are 8mb, and i cant seem to get them to boot with a 9100T at all. I tried various methods of modifying the bios, and i even tried custom coreboot. Nothing seems to get these puppies to work with the 9th gen processor. At best i get the desktops to spin up and the monitor to come on, but no post. Hoping someone has had more luck.

EDIT: 2025-11-03
I finally got my m700s to boot. Between Coffeetime and DSANKEs modding and a little bit of editing, i got my desktops to boot and play nice. Currently running 9100t in one with a 9500T on order. Goodluck out there fellas.

 

[edgarzev]

Hi

Thanks everyone for all the great input. It's been a great read sofar.

I have a Lenovo ThinkCenter M900 Tower ordered and I'll be putting a i5 9600k in it.

I would like to keep the PCI-e slot x16 and avoid any additional issues.

Should I use coffee time on the dumped bios with any specific settings enabled/disabled? Any specific versions of settings?

Or should I try coreboot instead?

Cheers