Hi all,
Got another Dell Latitude 5420 from local electronics recycling.

Need password removal please.

Model: Dell Latitude 5420
Service Tag: JKYC0J3
Suffix: 8FC8
Chip: WB25R256JVEN
flashrom match: W25Q256JV_Q
Board: GDF40 LA-K491P Rev: 3.0 (A02)​...

That worked perfectly! The laptop is back together and running well, thanks for your help....

Sorry about that. I keep forgetting to add all the machine details. As it turns out, the bios file was corrupt and unusable.
Thank you for your help....

Thank you for the feedback. You were absolutely right about the corruption.

I discovered the root cause. I was incorrectly reading the W25R256JVEN chip at 1.8V. I have since verified that this specific board uses a 3.3V logic level for the BIOS.
Unfortunately, because I have already attempted to write to the chip, I cannot provide a clean "Read Again" of the original data.

Does anyone have a Full 32MB Donor Dump for this motherboard (LA-K491P) with a Clean ME?

I have my Raspberry Pi 3 programmer now verified at the correct 3.3V level. I am...

Hi,
I have a question about the tool, not sure if it worked or not. I ran my bios dump in the tool and got this result:

BADCAPS **Dell-8FC8-Patcher**
rex98 **Bisayang Dako**

Checking for 8FC8 Hex Pattern...in file C:\Users\reneg\Downloads\dell_bios_dump_1.bin

8FC8 Hex Pattern Found at offset 0x10

Checking for first 8FC8 Hex pattern...

8FC8 Hex Pattern Found at Offset F41B1 and Replaced.

Checking for Second 8FC8 Hex Pattern...


File not Unlocked...8FC8 Hex Pattern not Found

...

Hi all,
Got a Dell Latitude 5420 from local electronics recycling (cheap due to locked BIOS).
Great first project and fun so far!

Need password removal please (manuf/admin mode).

Model: Dell Latitude 5420
Service Tag: 7SC4BC3
Suffix: 8FC8
Chip: WB25R256JVEN
flashrom match: W25Q256JV_Q
Board: GDF40 LA-K491P Rev: 2.0 (A01)​

Thanks!...

Hi everyone,
I'm Mark, a software developer from Canada. I'm teaching myself how to diagnose and repair hardware issues.