I don't get it when you said:

Do you mean you forgot your BIOS password? If that's the case, you need to follow the steps listed in this thread to modify the BIOS chip. I believe resetting CMOS no longer clears the BIOS password on these newer Dell machine....

emersonneo[USER="132938"]emersonneo[/USER] what problem are you encountering?

Update 20241002: I've successfully modified the SOIC16 wiring, read, modded, and write the chip using NeoProgrammer. All thanks to esteemed badcapers in this forum!

See the first 5 pictures for the modded clamp wiring. I had to de-solder and re-solder each wire separately on the clamp end. It's very important to put some tagging tape on each wire so you know which one is which. Equally important is the need to mark the FIRST pin of the SOIC16 pin that corresponds to the 1st pin of an equivalent WSON8 pinout. Many thanks to [USER="437898"]minhdigital[/USER] for the guidance....

Sorry for the late response. I finally had time to apply the 3.3v mod to my CH341A (picture 1). I admit I'm not proud of it, but at least it works, and the data pins now report 3.3V instead of 5V as before. Plus, my nose no longer senses some weird flame retardant smell when plugging the CH341A to my laptop, and the CH341A doesn't get too hot as before, either. Both the old CH341A Programmer and NeoProgrammer can recognize my CH341A after driver installation, so I think I did the 3.3v mod correctly.
Now, unlike [USER="437898"]minhdigital[/USER] who is brave enough to solder a bunch...

Thanks [USER="437898"]minhdigital[/USER] for the detailed pin layout conversion from SOIC16 to WSON8! Though I think I first need to make sure my CH341A programmer has the 3.3V fix applied so I won't fry my chip. I'm slowly wading through a mountain of BIOS guides and will definitely come back with a lot of questions. If you can briefly summarize the steps you do to dump your BIOS chip, please feel free to do so.minhdigital

Roger that, [USER="237374"]SMDFlea[/USER]. I will need to get the SOP16 clip for CH341A. Wish me luck, though...SMDFleaRoger that, [USER="237374"]SMDFlea[/USER]. I will need to get the SOP16 clip for CH341A. Wish me luck, though......

mon2[USER="295753"]mon2[/USER] pardon my noobness, but does that Replay Protected Memory Block (RPMB) mean if I flash a modified BIOS dump, the machine will detect it and won't boot at all? And before that,...

Thanks [USER="437898"]minhdigital[/USER] for the confirmation! Googling "25R256JVFN" reveals very little information of how to dump this chip, and almost always fell back to "25R256JV[B]E[/B]N", which is the WSON-8 sibling of the chip family. Any suggestion on which programmer + adapter for the 25R256JV[B]F[/B]N?minhdigital