@jannyer - that was not my point, my point was to shut down the continued fear that the black/gold programmer is putting out 5V to the chip, it's not.
Yes, I know, most 3.3V chips operate in the 2.6-3.3V range and more can safely be applied (read/write may be affected with more)
1.8V chips operate in the 1.6-1.85 range, and more can safely be applied (read/write may be affected with more)
With either, 1.8 or 3.3V chip, more will not fry the chip, unless it's a lot more, or a surge etc. Usually this will just cause corruption and failed read/write, or detection etc, once it's too much more.

Main point in my reply to you though, 5V is not send out to the chip, black and gold is fine without mod, 3.3V is sent out to chip and 5V is only used internally.
As @flashrom said, the outter pins may also be using 5V, but 99% of users are not connecting to those anyway.
Unless he meant all outputs too, if so, this adds to the spread of mis-information, please check yourself with DMM, only 3.3V goes out at the socket ports unless you have a bad sample. I checked mine, 3.3V only during read/write.

@chinobino - Yes, it's bad situation here. Would be an easy fix, if EC was on regular chip like in many cases, but of course not here
He said here, he flashed incorrect model EC FW, so we believe this to be the issue. We can't dump EC or write to it, for now, so we can't confirm what is on there until UART/Ribbon cable method is found for this QFP chip.

I'd "Bake" that GFX card when it comes to that point, I've done several and they've then lasted years after that (one I have to keep redoing about once a year, but many others still going strong after one session in the oven )

@flashrom - thanks for the ITE tools, but we need to know method to write/read from KB ribbon cable, EC FW chip is 128 pin QFP
We have correct EC FW file, that's not a problem, only being able to dump current EC FW from chip and see what is there, and then write in correct FW is the issue.

Yes, we've programmed in correct BIOS and confirmed write was correct manually too, no change. There is suspect swap of dead GFX card here on my part, and I see poor BIOS chip rework done too, so this system is not in ideal troubleshooting state since someone physically else messed with it when they shouldn't have
Incorrect or corrupted EC FW can instantly make system non-bootable, even if you flash BIOS/EC in wrong order on these systems = same/brick sometimes.

@Lost_N_BIOS

so to hardware flash you need to get the black programmer and the green programmer and an hardware chip clipper? im still stumped about how to connect the wire since only 1 wires can go in 1 hole at an time

@flashrom - Ouch, looks like a bad sample or batch then, or maybe I got updated one? If many are like that, then it must be OK though, since I've never seen anyone frying chips using them (even attempting on 1.8v chips)
But yes, far from ideal situation there!!

@jannyer - Here is another guide with many images, there you will see how wires/clip is connected more than shown at page one of this guide. [GUIDE] Flash BIOS with CH341A programmer
Up to you which programmer to get, you only need one green/blue or black/gold, both are around same price and both do same/same. Then you also need the SOIC8 test clip with cable.
If you have 1.8v chip, you also need 1.8v adapter

Zitat von Lost_N_BIOS im Beitrag #229

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@flashrom - Ouch, looks like a bad sample or batch then, or maybe I got updated one? If many are like that, then it must be OK though, since I've never seen anyone frying chips using them (even attempting on 1.8v chips)
But yes, far from ideal situation there!!

@jannyer - Here is another guide with many images, there you will see how wires/clip is connected more than shown at page one of this guide. [GUIDE] Flash BIOS with CH341A programmer
Up to you which programmer to get, you only need one green/blue or black/gold, both are around same price and both do same/same. Then you also need the SOIC8 test clip with cable.
If you have 1.8v chip, you also need 1.8v adapter

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@everydaydealer - I am not sure if you need 1.8V adapter or not, you have to give me the chip ID off the BIOS chip so I can look it up, you may or may not need, depends on what BIOS chip they soldered on your board.

It’s been a few days and I’ve been waiting - hoping for some more ideas on what I can try.

I feel like the best option is to try the keyboard-like flex cable as shown in the guide on Dangerous Prototypes. In order to try that, I’d need a datasheet for the IT8587, but I can’t find one anywhere. Upon searching for it, all I get are links to search results on sites like alldatasheet.com that don’t have an exact match. Where can I find one?

It also says I need a data sheet for my laptop. Will the service manual be enough?

There’s also the problem that this guide might not work for this specific chip.

As for baking the GPU, it sounds risky - especially with a laptop. It’d probably require quite a bit of disassembly too, right? Don’t wanna bake anything unnecessarily. Also risky in general. It’s something to explore if we ever resolve the issue with the EC chip.


@flashrom : As @Lost_N_BIOS says, we need to know method to read/write from UART/KB ribbon cable for this 128 pin QFP chip and how to use the ITE tools with that. Any advice?

I managed to check the bios chip. It's Winbond 25Q128FWSQ 1719. It might be Q or 0 or O

@Lost_N_BIOS please help me if I need 1.8v adapter or not. Problem is it's not readily available in my country.

Looks like this is the right number winbond W25Q128FWSQ. I see in this forum someone had same chip in their asrock board. But can I attempt with 3.3 or 1.8 is a must.

@TheCM - baked GPU is MUCH easier on laptop card than desktop, but it's all basically same/same, just less stuff on a laptop card. Yes, you'd have to pull the card out, it's just two screws after you remove the heatsink.
I linked you to the schematic/datasheet for this system, which includes pinout for ribbon cable connection and 8587 pinout/info is shown in that PDF too, see post #216 for the PDF >> pages, B-2, B-31 + B-49 (B-50 KB)
They program them for you here, not sure if this is good price or not, randomly came across it - http://www.bios-chip24.com/epages/637300...Products/100002
You must purchase also a chip - http://www.bios-chip24.com/ITE-8587E-I/O-Controller-Chip/en
Then you would need someone local to you that can remove and replace QFP chip, call around and ask repair shops if they do BGA and QFP replacements and you should find someone with proper setup and skills. Be ready for huge fee though

@everydaydealer - Yes, W25Q128FW is 1.8V chip, so you will need to order one and wait for delivery.
Or, if system is bootable, you can use the flashrom method at "Annex" of this thread, it's not only for Asus, nor only for 32MB BIOS - [Guide] How to flash a modded AMI UEFI BIOS

@Lost_N_BIOS

It’s nice to have to option of getting a pre-programmed chip. That route will end up costing £24.27 (If I purchase from that site) + repair shop costs. If it fixed the issue and got the laptop to POST, it could be worth it.

-

I’d like to explore the programming-it-myself route first though. The reason I was asking for a separate datasheet is due to the guide referencing two (one for the laptop, one for the chip). I did manage to find a .pdf for the IT8587, but it’s only one 1 page and I’m not sure it’s needed with what’s in the service manual. I’ve included it here anyway.

The thing is, I’m not really sure what I’m doing. It’s pretty advanced stuff, so I’m just making assumptions. The guide calls for KSI4-KSI7 & KSO3, however I’m not sure if this is also what I need for my laptop. Will the signal descriptions match for my laptop?



I found the same KSI numbers and matched up the pins for IT8587 and the KB Connector. I’ve put the data in the table below. All that info can be found in the image (B-49) above - what do I need B-2, B-31 & B-50 for?



I’m just not sure if those are the correct signal names/descriptions. I just copied them from the guide for the other chip, but I can’t find the same information in the service manual. Check the .zip of images I included - it’s screenshots of the relevant information for the specific laptop and ENE chip the guide is referencing. I’ve highlighted the key bits of info. Notice how it also includes signal names and descriptions, but I can’t find that in the service manual for MY laptop.


If you’re confident this information is all correct, then I’ll go ahead and get myself a keyboard-like flex cable and maybe the power jack cable if needed. Is it needed? Also some wires and insulation tape, which I might already have.

Is there anything else I need to know for the guide?

Thanks @Lost_N_BIOS . My board is not posting. Meaning dr debug gives F2 F9 with sequential beeps.

Not sure if I can boot from usb drive. Unless board finds it some how.

What happens if I try without adapter?Won't work or fry?

@TheCM
Without the (complete) IT8587 datasheet it will just come down to trial and error.

The service manual shows some access point to what seems like the EC flash interface:


Edit:
Nevermind, this is just the external SPI connection for the EC.

Here are some more ITE tools, but it might be not of much use (for now).

@everydaydealer - You need 1.8V adapter, you may be able to read or write to chip due to voltage losses, but it could damage things so not advisable to try it at all, plus you'd never know if dump or write was corrupted causing non-start after trying anyway.

@TheCM - Sorry, I cannot help advise on any of this, I don't know, it's all above my skill-set

@flashrom

I’m really struggling to locate the complete datasheet for the IT8587. I’ve searched and asked around, the best I could get was a very similar one page .pdf to the one I already attached. I’m starting to think there isn’t a full datasheet for this chip and this is the best we can get. What other information do I need actually need that we don’t have?

I’ve been looking for a full datasheet similar to this one for a different ITE chip, this ENE one or this much smaller ITE one (different chip).

Any advice on where to look?

And if I do find one, how would I use the ITE tools you linked?

I also found this guide on programming chips whilst looking for the datasheet, but with some other programmer tool that these Russian guys made? Maybe some of the information will come in handy when using the Dangerous Prototypes method. It even mentions the IT8587 as being compatible. http://vss.store/VERTYANOV_JIG/UPD/Instr...0JIG%20ver3.pdf

@@Lost_N_BIOS finally i received the 1.8v adapter and Asprogrammer 1.41 able to read the IC. This is after i selecting the IC by search. I should just write and verify ? or erase write and verify ?
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@Lost_N_BIOS so i tried erase and program. both were successful then i did verify. This is the error im getting. Should i unprotect before writing ?

Update: I did hex compare with backup I did before and after reading again after writing. Both are same. I compared with bios file I have. It's not same.

Basically it didn't write I guess. The unix flash rom method not detecting the chip. This is how I connected.