On system1 problem, maybe SPI chip is inserted wrong, or wrong chip in wrong position?

Yes, for now, only flash back original file to 16MB chip. There is some issue with matching chip 1 and 2, something. So any BIOS I modify is going to cause recovery from chip one, I need to figure that out (Since can't flash chip 1 without error either).
I will check out new version BIOS, but the main issue is that chip one BIOS (recovery BIOS), and without that from new system I probably can't figure it out. That's what I meant about having system in hand, I could test many changes quickly, that's all.

On your current system2, what does meinfowin show, please post an image, thanks!
Also, you didn't answer >> Does 8MB BIOS current contents match original 8MB BIOS dump? Please compare new dump from chip with original dump from chip via hex compare, or send me both files and I will check.

Are these BIOS removable? If yes, does the system run with only 16MB BIOS installed and no 8MB BIOS?

Hi

How are you

Today I received 2 New systems similar to system 2 and both come with N11 V2.18 Bios and not 2.30.
When I power on both systems they start by showing attached messages; please check.
I think that both systems still in Manufacturing mode and in this case we have more chances to use modifications for Bios.
If you want me to make New bios file copy for you so let me know.
Old systems i dont know what happened but they dont work anymore.

Just tell me what to do step by step and i will do it this time.


thank you

I don't know about HP manufacturing mode? Does it have any settings or things mentioned in the BIOS regarding this?
I think it's probably best you not mess with these, since even from own verified BIOS dumps you were not able to fix other two systems.

Hi

Please can you tell me what is the use of those 3 jumpers. This picture is for my Eliteone 800 G2.

Also HP Manufacturing MODE mean that this computer is not ready for selling yet because they need to install many other things and do tests. System is completly working but need to be configured depending on which cpu memory hdd wifi they will use and once all parts are installed they will lock Bios and we cannot do any changes after.
This is why my first Dump for you was from system1 is similar to that one.

I think that the second Bios Chip is only for Recovery ROM from picture 2 we can see that. If Main Bios have problem then system will allow us to recover it by using Bios Backup Chip.

Hope it can be helpful for you

Yes, I understand what manufacturing mode is, but have not been in an HP manufacturing mode environment, so I meant I am not familiar with what all options are present in there and or how to finalize the system setup.

I still cannot figure out why you cannot recover previous system using it's exact dumps to both chips. There must be some error with the software/programmer otherwise it would be exactly the same as before you wrote to the chips. Are you getting a verified result from dump/buffer to chip after you write?

This is why I said we should probably stop, not attempt this, you already killed that system and unable to recover. Writing only to the main BIOS causes recovery anyway, so no point in trying unless we do both.
I was not aware backup had partial items, I could look that over again and see about updating it too, partial way this time instead of full way like last time, but still then if you cannot write back original dumps them something is wrong and this system would be dead too.
For that reason, that is probably why all other BIOS I gave you failed, it's not being written to the chip properly (ie not verified), same as what happens when you try to put back original.
You need to figure that out first, before any BIOS mods are flashed to the board. Dump originals now, backup and main, and then reprogram them, if it fails then you know the issue (Programmer version, or process, and no verification done - because if it verified then it can't fail with original dumps on previous killed system)

For your images, on picture 2 (First one above), it looks like two BIOS chips there yes, but unsure, dump them and check contents. And yes, looks like you can add a SPI pin header if you wanted, for BIOS recovery via cable programming

FDO jumper is FD Override, so you can write to the FD region of BIOS (ie unlock all regions for flashing via hex edit/reflash, or flash all regions while jumper is set). If you write unlocked FD to BIOS with this set, then you don't have to use it anymore, will remain unlocked for all regions.
PSWD - I assume clear or bypass a BIOS or setup password while enabled, unsure if it clears or only bypasses while enabled.
BB = BIOS Bootblock, I am unsure if that is used to allow re-write to BIOS bootblock alone, or if it's a method of recovery by setting this to jumpered and then board can recover.
Try that on your broken system and see if it will boot at all, put stock BIOS in root of USB Stick using stock name and then another two copies using stock name but ending with extension .rom and .bin
Or see page 8 here, not your system, but same process needed most likely - http://h10032.www1.hp.com/ctg/Manual/c04076661

Hello

Let me explain to you.

All files I sent to you were dumped from working systems. 16MO and 8MO both from same system.
You sent me Modified Bios and I used my programmer and it also worked and updated ME version.
Now I bought a NEW programmer last week also and i will use it to make New backup of my BIOS and check it again.
My system2 is still working with only one problem which is Cooler speed.

That is All.

Hope we can do something good this time.

!thank you

Hello Friend,

Today I checked HP website for my HP Eliteone 800 G2 ME versions that can be used for my AIO and I found that;

I think the version that you used can not be used for our system and this is why i am getting problem with cooler.

Please check this link;

https://support.hp.com/in-en/drivers/sel...mId/vc-216413-1

Also there is a NEW BIOS Update for our system which is 02.36 Rev.A

Let us make it again step by step and we will win this time.
I will use the old System2

Thank you
Salim

Yes, I know all files were from working system. My main concern was last round of BIOS mods I sent you, you said failed, and then you were unable to put back those stock working roms and get the machine back up and running. That's why I said there is a problem with the process somewhere, programmer software version, file verification when saving or programming etc.

I did not know you had working system2 again, last you mentioned it was dead and you could not even get it running again with stock roms programmed back.

"The version I used cannot be used for this system" What version of what? ME version? I/you have to use a specific version, otherwise you cannot do the mod you want.
Sure, I can put latest 11.8, newer than the old one they have there, but that will not work for what you want to do. If you just wanted all up to date BIOS that can be done super easy in few steps without issue and we'd be done on page one, but you want mod to use non-compatible CPU Series, that requires many changes which will not be like default or most recent ones used.

Hello


System2 I gave it to my friend who installed chip for me again on MB and now working perfectly with only problem CPU Fan speed.

I only want to Upgrade my system to use Kabylake CPU with Skylake CPU.
That is All I want.
To do that, We need to update also VGA and ME also as you said. I am not professional with that.
So please tell me what you want me to do and i will do it step by step.

Slowly slowly i will learn.

I can use my New Programmer is SOFI SP8 Type A.
Better than my old programmer. It can read all models of 25 SPI serie.

Thank you
Salim

I know that's all you want, KABY, but remember we started over and did the required ME version only change and then board died. ME, vBIOS, Microcodes all need changed
If you want to try again, BIOS in post #83 is starting point, with ME change only. If you program that, and BIOS does auto recovery, then either means we cannot do this mod at all, or we need to physically remove that backup chip for a test to see if that will stop the check/auto-recovery from happening.

Ok I will start with that

Can you solder/desolder yourself? Asking because if you can, and are good enough to not be concerned with that, might be a good test to see how the system acts with the backup BIOS removed, in case that may be the only way forward

Yes I can. I will do that and show you result.

By the way, as I told you before I can send you 1 barebone system with DDR memory like that you will have a system in your side.
I have a friend who can do that for me from HK.

Thank you
Salim

Great! I'm hoping if recovery is forced by simply updating the ME as mentioned above in test BIOS from previous page, then remove the backup BIOS and see if same or other issue occurs. I think it would stop any recovery check, attempt at recovery process.
Test post #100 with the board as-is first though, so if no recovery we can move forward one part at a time until we find the source of the recovery initiation.

I'll send you PM on the send system, but I think it will be too costly in shipping $

Don't worry I can handle that.
Most important for me is to use 7th Gen cpu