Where can i find instructions for dumping my Dell Latitude 7430 bios? Ive read bits and pieces of info on the forum but i cannot definitively say which windbond chip is my bios. It sounds like the full bios may be spread over two windbond chips. I also read some dells cant be read with a chip clip? I need to desolder the chip or desolder the vcc pin and then use the clip? Please point me to a good reasource so i can figure this out. Once i dump the bios i need to manually edit some uefi variables that i wrote to my bios. I accidentally destroyed the key/certificate that allows me to modify the values which is why i need to manually remove them.
Your answer is on Badcaps thread you posted.
Get the ICs pdfs and details for pins/voltage, read and save them all.
Main bios should be the 256Mbit=32Mb
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Correction. My dump from my 16MB chip was all zeros and my clip won’t connect to the 32mb chip. The 32MB chip is a lower profile chip. Can my Pomona clip connect to this or do I need to desolder and remove it from the board? Reading the 16mb chip was inconsistent. My Green Ch341a has 4 power selections 1.8, 2.5, 3.3, and 5v. It recognized the chips 1 out of 4 times when it was on the 2.5v setting.
Sir… you post here on this thread detailed info and actions done or you post in Badcaps thread, now… i dont have such laptop to confirm anything, schematics/boardview seems also no available around as its a recent 12th gen…so you post detail pictures, dumps, system info, dell info etc… or else no one can help you.
Im not always follwing the same user threads on Badcaps…as Win-raid is one of my main forums.
The 32Mb is main bios and the 16Mb should be CSME…but none can be zero/ff is was never erased/bad programmed.
“Low profile” as you called it, its a WSON8 package and not the ones that that clip can connect, the clip is made for SOP8.
For WSON8 there’s the so called “Needle” pin pogo connector, search on Aliexpress/Amazon, like this example:
And flashrom/linux is not the only option neither all apps have all ICs models in their db.
This is the kind of service provided by tech shops and users should not expect to master/succeed these operations in “a blink of an eye”…
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