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.

[louie082588]

Good day everyone , can you please help me to remove admin password
Dell Latitude 5440
Model: model IDB40 LA M401P Rev 1.0 (A00) 2022-12-26
ST: JBM9D24

Thank You,

[LBTT1121]

Good day everyone , can you please help me to remove admin password
Dell Latitude 5440
Model: model IDB40 LA M401P Rev 1.0 (A00) 2022-12-26
ST: JBM9D24

Thank You,

try

[SMDFlea]

Good day everyone , can you please help me to remove admin password
Dell Latitude 5440
Model: model IDB40 LA M401P Rev 1.0 (A00) 2022-12-26
ST: JBM9D24

Thank You,

Depending on the suffix you might be able to unlock it yourself ,and others in future - https://www.badcaps.net/forum/troubl...23#post1622423

[Thoa]

I bought a XGecu T48 now. But i cannot read the W25Q256FV@WSON8 :/

What am i doing wrong? I want to save this Latitude 5440 so bad...

APP Version : 12.96 Model : T48 MFG:2025-05-29
Device : W25Q256FV @WSON8
Pins Detected Passed!
Check ID Error!
Checked ID is:0x 00 00 00
Wish to continue programming , please cancel [Check device ID] option

[samueldourado]

Hello i dumped both bin files on respective chips and Laptop is completely dead - previously the power button led will turn on but nothing else - NOW nothing turns on when i press the power button the charging tiny LED turns on orange and thats it.
Kindly help with it Many thanks

Did you manage to solve it?

[samueldourado]

Hello, could you help me remove the admin password from the bios?

Dell Latitude 5440

Modelo: modelo IDB40 LA M401P Rev 1.0 (A00) 2023-11-10

ST: 1CTH244

[hoaca388]

Hello, could you help me remove the admin password from the bios?

Dell Latitude 5440

Modelo: modelo IDB40 LA M401P Rev 1.0 (A00) 2023-11-10

ST: 1CTH244

Unlocked

[Jm7016]

Can you please help me unlock this Dell Latitud 5440 laptop BIOS?
Dell Latitud 5440
Numero de placa
IDB40 LA M401P
Rev 1.0
Service tag 2L33X34

[volinakis]

Can you please help me unlock this Dell Latitud 5440 laptop BIOS?
Dell Latitud 5440
Numero de placa
IDB40 LA M401P
Rev 1.0
Service tag 2L33X34

write only UC2, leave the other one as is.

[xpy000]

Hi guys,
I have a dell latitude 5440 la-m402p with admin password
service tag: 68ZL224
The device has 64 mb chip not 32. The other bios chip is just 1 mb.
I will be very grateful if you could help unlocking it.