nikal
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Of course, this is the cleaned BIOS image. You need a SPI programmer though in order to flash it and some soldering skills.... -
You know something ? Your link helped me to unlock the BIOS, it solved my original problem the reason I did this post. I decided to give a try to this BIOS because I was sure it was unlocked and made to be flashed in any Wyse 5070. I tried but the first time it didn't boot but I had no error code so I decided to clean the IntelME region and re-flash it. The machine booted and the BIOS is now fully unlocked
Thanks once more and [USER="237374"]SMDFlea[/USER] who merged your post with mine.
Kind Regards
NikolasSMDFlea...Leave a comment:
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Thanks [USER="295753"]mon2[/USER]mon2...Leave a comment:
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Thanks for the reply and info.
I have removed this ITE from a Lenovo AMD motherboard and transferred to a Lenovo Intel m/b. It's a "miracle" that it even charges the battery somehow (with fixed current, though). The m/b doesn't power on but I'm sure the culprit is the wrong EC firmware loaded to the EC. Despite that I see all the standby voltages present which means that the original issue (burned 3.3 ALW/LDO power supply and burned EC) is fixed.
Do you have any link that shows RT8209H/F programming ITE through SMBUS ? I thought this was done using SPI or ISP....Leave a comment:
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Hi,
if it happens to use it please post some comments. I may also consider SVOD4, it costs around €230 including different flex cables and expansion board for EC programming which initially I thought I had to buy separately, but they are finally bundled....Leave a comment:
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Yes I know that however, if there is already a firmware in the internal flash of the EC the PCH won't try to force a new EC firmware flashing (or is it the EC its self that triggers the flash procedure?) So the only way is the external flashing using a programmer. It's unfortunately a dead end as I said. System won't power up without the correct EC firmware so there is no way to initiate a EC firmware flashing. That's my assumption. In the meantime, I found the EC firmware in Vinafix but this is a paid site and in addition, I need to buy a programmer too. What about Vertyanov in case I decide...Leave a comment:
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The EC is Lenovo branded but it has the code "IT8586E/AX 128L" So you are telling me to buy a preprogrammed one, right ? And a trip to HK or Shenzhen is out of question too (though I would be very glad to meet Master Liu in person 😄)
Yes I know about SVOD and reverse engineering efforts but it won't pay back its money at least for me. It's an investment I can't do right now.
It would be very interesting though if I could force somehow side loading of the firmware.Leave a comment:
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Hi again and thanks for the reply,
Yes I know the SMBUS. Apparently the EC has a firmware (loaded from the other board that I removed it which was not the same as the board it is now) and has some charging parameters preprogrammed and uses these for charging. The BQ24780 has a specific address in the SMBUS (b00010010 (0x12H)) and this EC was removed from a board that used the same BQ IC so it can initiate the communication. But apart from this, I believe now I reached a dead end. Either I have to attempt and program the EC with the correct firmware for this board (which I don't know...Leave a comment:
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Just an update, I replaced Q44 and I'm not sure if this is relevant or not (I can't see the connection) but now I have battery charging but the system won't power on still. It's probably because it's the first time I left the battery connected for a considerable lengthy time since it apparently was very discharged.
However this shows that the EC somehow communicates through SMBUS with the BQ and battery and enables charging. But still won't power on the system. Is it an EC firmware issue or what ?
EDIT
What I noticed is that it takes some time to enable the charging....Leave a comment:
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19.30V and I don't see any fluctuation....Leave a comment:
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hi again!
21.3 Ohms agrees with the values on the schematic....Leave a comment:
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Correction for the above. The current immediately drops to [B]1mA.[/B]Correction for the above. The current immediately drops to [B]1mA.[/B]Leave a comment:
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Just to clarify, the laptop won't turn on but I can measure all the standby voltages (including 1V for the PCH I think and 8.5V in the battery coil). When I put the adapter I see again around 185mA current draw which immediately drops to 10mA.Leave a comment:
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Thanks again for your reply,
Well....The reason for this was that I injected power after the second MOSFET whereas in order for the pin3 to have power I should have injected power after the first mosfet (based on the schematic). I did it and I checked pin3 which had 12,5V (there is a resistor between the main power rail and the Pin3 so there is a drop there). However, the gates of the MOSFET where at 0V again.
Then I checked again the schematic (attached) and I decided to remove PQ44 which is controlled by the Pin98 of EC which I think turns the input FETs OFF by shorting...Leave a comment:
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Hi,
thanks for the reply. Please see the attached image.
The resistance of the main power rail after the two first FETs is starting from several Mohm and stabilizes after a while at around 100Kohm (I guess as soon as the capacitors on the main rail are charged up)....Leave a comment:
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Hi again,
After replacing the 3.3VALW and 3.3 LDO rail restored, I found that EC was burned. I had the same EC (IT8586E) from another board (yes I know it needs specific firmware in order to work) and I replaced it just to see if something will be different. Unfortunately the same behavior. The first MOSFET after the DC-IN won't open (no gate voltage). I also replaced the BQ (24780) but this didn't change anything. The VCC power reached the BQ, I also have the REGN voltage and the ACDET (2.6V). If I bypass the first two mosfets and provide voltage to the board after the second mosfet...Leave a comment:
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SMDFlea...Leave a comment:
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SMDFlea[USER="237374"]SMDFlea[/USER] Thanks for the info. I'll try it and let you know.
Kind RegardsLeave a comment:
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Hi again,
tried with another SPI flash and it's the same. The same error code. The original BIOS works though.
Kind Regards...Leave a comment:
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