latitude 5440 la-m401p la-m402p password

[imedbox]

hi try

Thaks you i will try it and give back the result.

[Thoa]

Hello Community.

I have here a Dell Latitude 5440
IBD40 LA-M401P
Rev: 1.0 (A00)
ST: DZRJGY3

I tryed to get a binary file of the 6x8 first and opened in UEFI-Tool. It does not look like an valid bios file. I used NeoProgrammer with W25Q256FV. When i open a file posted by a member, i can see all the modules in UEFI Tool

EDIT
Ive read the IC twice and compared the files, which are identically
EDIT2:
just recognized the files are completely empty
looks like the pogo-pin-tool does not work here. the solder-dots are really much smaller than on the Latitude 5520

[hoaca388]

Hello Community.

I have here a Dell Latitude 5440
IBD40 LA-M401P
Rev: 1.0 (A00)
ST: DZRJGY3

I tryed to get a binary file of the 6x8 first and opened in UEFI-Tool. It does not look like an valid bios file. I used NeoProgrammer with W25Q256FV. When i open a file posted by a member, i can see all the modules in UEFI Tool

EDIT
Ive read the IC twice and compared the files, which are identically
EDIT2:
just recognized the files are completely empty
looks like the pogo-pin-tool does not work here. the solder-dots are really much smaller than on the Latitude 5520

Read the IC at least 3 times and compare them with each other.

[Thoa]

Read the IC at least 3 times and compare them with each other.

Thanx for your fast reply hoaca388.

I bought another pin-connector, same result. I do not get any data. It seems that NeoProgrammer reads data, when finished, it says success. But it is only FFFFFFFFFFFFFFF

Do I have to do the 3.3V-modification to my CH341A(Black)? I used W25Q256JV with NeoProgrammer and on the chip is written Winbond 25Q256JVEN.

On the DELL Latitude 5520 with XMC 25RH256CXIQ it worked totally well. Reading and writing. but not on W25Q256JVEN. But why

[Thoa]

Thanx for your fast reply hoaca388.

I bought another pin-connector, same result. I do not get any data. It seems that NeoProgrammer reads data, when finished, it says success. But it is only FFFFFFFFFFFFFFF

Do I have to do the 3.3V-modification to my CH341A(Black)? I used W25Q256JV with NeoProgrammer and on the chip is written Winbond 25Q256JVEN.

On the DELL Latitude 5520 with XMC 25RH256CXIQ it worked totally well. Reading and writing. but not on W25Q256JVEN. But why

EDIT:
I´m sorry. I think its a connection issue.

[Thoa]

What about the 3.3V modification to the CH341A? I messured 3.28V on pin 4 to 8 without the modification. So what is that modification good for?

When reading the WSON, I sometimes get some data, sometimes not, so i dont get 2 or 3 files which are identical.

[peste]

What about the 3.3V modification to the CH341A? I messured 3.28V on pin 4 to 8 without the modification. So what is that modification good for?

When reading the WSON, I sometimes get some data, sometimes not, so i dont get 2 or 3 files which are identical.

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

here is a video for example..https://www.youtube.com/watch?v=DWWi...nnel=ThisIsHow

[Thoa]

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

here is a video for example..https://www.youtube.com/watch?v=DWWi...nnel=ThisIsHow

THX peste... You alread wrote that in 5520 bios unlock thread... I bought a pogo-pin tool, which worked great with my 5520. I do not understand, why mod the ch341a to 3.3 volt, when it is already 3.3volt without modification

[Thoa]

THX peste... You alread wrote that in 5520 bios unlock thread... I bought a pogo-pin tool, which worked great with my 5520. I do not understand, why mod the ch341a to 3.3 volt, when it is already 3.3volt without modification

Found it here:
https://www.youtube.com/watch?v=HwnzzF645hA

[Thoa]

OK. I modified my CH341A to 3.3 V ... but still no reliable outcome. its so sad. I bought 3 pogo-pin tools. none is working. I think the problem is somewhere else. I tried AsProgrammer and NeoProgrammer. I ve tried W25q256FV and W25Q256JV.