Hello, I need help.
Goal: Remove Error 1802 (“Unauthorized network card”) for an Intel 7265HMW card.
This is what I have:
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Model: Lenovo B590 (Model 20208)
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Main BIOS Version: H5ET73WW (1.16)
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Main BIOS Chip: Winbond W25Q64CVS
(8MB / 64Mbit) - This is the only 8-pin chip I can find. -
EC Controller Chip: Nuvoton NPCE885GA0DX
(Markings: 2247BD32-072, 3023DFA)
My Diagnosis & What I’ve Done:
I know this is a Dual Whitelist problem. I ALREADY patched the Main BIOS (W25Q64), but it failed. Here are my exact steps:
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FPT works (BIOS Lock is OFF). I dumped the 4MB BIOS region with: fptw64.exe -d backup.bin -bios
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I found the LenovoWmaPolicyDxe module (by searching for “1802” Unicode).
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I extracted its body, patched it in HxD (74 17-> EB 17).
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I used UEFITool (v0.28) to “Replace Body” and “Save Image File…” to create modded.bin. (This should fix all checksums).
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I flashed it back with: fptw64.exe -f modded.bin -bios
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The flash was successful. I dumped the chip again and confirmed my EB patch is on the chip.
…BUT I STILL GET THE 1802 ERROR.
This proves the real check is in the Embedded Controller (EC) Firmware.
MY “BRICK WALL” PROBLEM:
I CANNOT FIND THE EC FLASH CHIP.
I read the Dale Nunns repair article and AI research. All sources say there MUST be a second 8-pin chip: the Winbond W25Q32FVSIG (4MB / 32Mbit).
I have searched the entire motherboard (both sides) near the Nuvoton “spider” chip and the W25Q64. I CANNOT FIND IT.
My Final Questions:
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Is it possible that on my specific motherboard revision, both the Main BIOS (8MB) AND the EC Firmware (4MB) are stored on the SAME 8MB W25Q64 chip?
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If “Yes” — how do I patch the EC part? (FPT can’t touch it, and my CH341A
programmer will dump the whole 8MB. Where is the EC patch location inside the 8MB dump?) -
If “No” — can anyone please show me a photo of where the W25Q32 is hidden?
I am not ready fight again with my CH341A programmer, SOIC8 sucks! And also I don’t know what to read!
I am attaching my CPU-Z report, my original backup.bin
(from FPT), and my modded.bin (that I flashed).
I am not ready fight again with my CH341A programmer, SOIC8 sucks! And also I don’t know what to read!
I am attaching my CPU-Z report, my original backup.bin (from FPT), and my modded.bin (that I flashed).
Thank you. (AI helped me step by step, i’m sorry if i did smth wrong)
Edit by Fernando: Thread moved into the “BIOS Problems” Category and title customized/shortened