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Thank you, I found out that will be in groups of 4 but... do i have always look for the same 4 patterns or depends on the laptop will be different? How you know which patterns are the ones that you have to modify? (I saw other 32MB dump on previous page and I saw that they had 3 of the same Byte groups that end in AA changed to 00, but there was one pattern that I did not have in my BIOS.. is there a list or documentation of all the possible variants that need to be modified ?)
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Last edited by volinakis; 06-16-2024, 12:50 PM.----------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Hello,
it might be simple if you worked with it before, but is my first time playing around with bios dumps and flashing... I could only see certain patterns and not sure if the patterns repeat with the type of chip or not.
I did read the post but all the references to my model are towards a program that could patch it, it does not have any information or I could not find any information of why we choose those patterns and why we replace them like that. I am sure I can download other ones and replicate them, but my goal was learn, that's why I made the questions. Sorry if that bothered you.
I have couple more laptops and will practice with those, thanks for the help.
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Hello,
I broke the chip of the BIOS that you modified when trying to solder it back,
I have other Latitude 5400s and I could follow and replace the 00 FC AA and 00 FD AA Patterns, I have flashed the modified BIOS but the screen will keep black and booting constantly... I tried to press F1 during boot and also pressing F2 during the boot but the screen will not turn back on... There is no signs of POST or any screen output at all... I can only hear the fans going on and then the computer will power off by itself after 30 seconds.
Does this mean that I did modified the bios in a wrong way or that the BIOS file got corrupted while flashing ? Or is there any other step that I am missing in between?
EDIT: Forgot to mention that ignored when the 00FDAA patterns looked like this for example:
7EB26400 FDAA3F82 . Is that right? Also, what would be the start and end of the 0xXXXXXXX to start and end modifying this patterns? I think that could be the main problem that I am facing.
Thanks.
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HELLO SIR
DELL LATITUDE
`5400
SERVICE TAG :- 6H8C3X2
MOTHERBOARD CODE :- EDC41 LA-G891P REV :1.0 (A00)
NO DISPLAY
PLEASE CHECK BIOS AND REPAIR
THANK YOU IN ADVANCEDComment
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read the rules..https://www.badcaps.net/forum/troubl...before-posting
post the Service Tag..the full name and model of the laptop,
Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:
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Every donation made will go towards server fees and maintenance costs.Comment
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DELL LATTITUDE 5400
SERVICE TAG-23BQ1X2
BOARD PART NUMBER- LA-G891P
BLANK DISPLAY PLEASE BUILD THE BIOS
THANKS
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Hell guys I'm having a trouble I have 5400 8fc8 locked I have tried many bios it's working but I lost the audio
serial : 5HB0N33
service tag 5HB0N33Comment
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Help please, the Original bios file of this pc as bean removed.
The PC as been tooken to somewhere before so i need someone to get me the bios file those one i get from the site are not working fine with the pc, could someone matching one
Here is info:
EDC41 LA-G891P Rev:1.0(A00)
S/T: 2LHJL33
Dell Latitude 5400
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Hello everyone!
Could someone help to delete this bios password ?
Dell 5400
Service Tag : J8D7N53
Mainboard : EDC41 LA-G891P Rev: 1.0 (A00)Comment
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Thanks to all supporters.
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Hello everybody! Can anyone help to erase this bios password? I'm trying to do a Raid0 but I can't access it due to the password
Here is the information:
Dell 5400
Serial: 5R94S63
Service Tag: 5R94S63 *(8FC8)*
Motherboard: EDC41 LA-G891P Rev: 1.0 (A00)
Winbond 25Q256JVComment
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Hi there masters, recently i got a dell 5400 chromebook and wanted to install windows, i searched the internet and i found out other people also wanting a UEFI bios for this model, i searched there is a R/W legacy, but there are bugs like keyboard/trackpad not working, and hard to install.
so i decided to try to port one, this bios is based on dell 5400 windows version, i am testing this bios for a week now an found only a little to no bug at all in windows 10, or only a minor issue
in windows 11 sound driver compatibility, but overall its ok, for me i can deal with it, 😅😅😅... -
Dell latitude 5580, motherboard cdp 80 la-e151p
3 amber 3 white blinks. Dell website sais it's problem "bios recovery" and suggested solution "recovery image not found"
(from here https://www.dell.com/support/manuals...e7a&lang=en-us)
I try plugging charger while pressing ctrl+esc, machine turns on, nothing and after 20 seconds it gives 3 amber 3 white blinks again.
Since ssd is replaced and had clean install windows, i've... -
Hi
i have dell latitude E7270 with following symptoms:
- takes long time to restart.
- sometimes powers on and then off
- sometimes while working it just dies,
From googling online bios clean could possible resolve this?
i was able to save bios and was going to try bios clean myself but get an below error when i drop it in ME analyzer.(unsure whether this sometimes occurs or could be due to bad/corrupt bios)
As ME analyzer gave me an error i just decided to write bios with a cleaned bios from E7270 bios post.
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Hi, I hope someone can help me with this, my Dell G15 Ryzen Edition does not post anymore (black screen, no Windows boot, no BIOS screen) after Windows Update pushed what appears to be a buggy bios image, I've tried the following with no success:
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- Disconnect machine from AC power and battery overnight.
- BIOS recovery process
- Connected external display via HDMI
- Disassembled machine and found bios chip, its a Gigadevice 25LR128DSIG (GD25LR128DSIG), at first I tried to get it detected by CH341A (with... -
Hello guys ,i have a dell latitude 5590 with f411p bios,this laptop has bios password ,i tried to read the bios(winbond 25q128jv) with ch341 but when goes to verify give error ,it said doesnt match .After this i flashed another bios which is cleaned and then the laptop was dead ,i tried to turn on but only white light in the buton power turned on several times and then no display at all .I had a backup and flashed again the original bios ,but this time the laptop will not turn on at all ,no light nothing,the bios original bios that i flashed was having verify error when i verified with ch341 ,i...
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