Dell update utility installed wrong bios on Latitude E5450

Same problem. I got it to boot back up but now it wont take the correct BIOS. This is probably going to be a call to dell

 even the bios update through the bios update feature detects the wrong system id...

rhe automated (?) support of this community forum replied to me that the laptop is out of warranty and i should seek support from a community member!!!!!!! 

Have you tried to install the correct BIOS using this method???

Create a new folder on a desktop named “BIOS Update”

Then download your BIOS update.

Dell Latitude E5450 System BIOS:

https://www.dell.com/support/home/us/en/19/drivers/driversdetails?driverid=w6pn0&oscode=wt64a&productcode=latitude-e5450-laptop

Copy the update to that folder you just created.

Then create a bootable USB drive using “Rufus”

https://rufus.ie/

Copy the BIOS update to the bootable USB drive you just created..

Insert USB drive, power-on and start tapping the “ F12 “ key.

Boot from USB and run the BIOS update.

After reboot test and post any results.

Best regards,

U2

Welcome to the Dell Community  @a66fm  and @TNA Computers 

Was there are an option to choose the BIOS to install???

Do you know which one you installed???

There are 2:

1. E5450A23.exe

File Size:8.62 MB

2. 5450A23.exe

File Size:8.6 MB

I am not sure if they are interchangeable or not???

Latitude E5450/5450 Driver Support page:

https://www.dell.com/support/home/us/en/19/product-support/product/latitude-e5450-laptop/drivers

Best regards,

U2

i assume that it managed to instal 5450A23 as this is now indicated as installed on the bios update utility

regardless of what i try there is no way to manually revert to the E version

according to the dell drivers update site i should only be able to use the E version as my laptop has the docking socket

@a66fm 

Did you try to rollback to version A22???

https://www.dell.com/support/home/us/en/19/drivers/driversdetails?driverid=nhdm9&oscode=wt64a&productcode=latitude-e5450-laptop

Regards,

U2

Having the same problem. I've tried almost everything to revert back but no luck whatsoever.

^This is the point where i'm standing at

i'm not allowed to revert to any E bios version (i've even tried A02 without any luck)

@a66fm 

I have a similar problem with two E6420 XFR's!!!

Someone upgraded the BIOS to the E6420.

The 2 XFR's should be touchscreen but the E6420 BIOS completly disabled the touchscreen.

I was successful in installing the correct BIOS but it did not change the problem.

https://www.dell.com/community/Latitude/E6420XFR-no-touchscreen/m-p/7498849#M19180

If I remember correctly the touchscreen on the XFR uses the USB bus???

My area is not on lock down "YET" so if I have time tomorrow I will look into this further.

Best regards and be safe,

U2

I had the very same  problem yesterday. I managed to roll back to BIOS v.A22.

Steps from Windows operating system:

1. Get the A22 bios from E5450 System BIOS A22 

2. Start cmd as Administrator, and move to the folder where downloaded BIOS .exe file is located

3. Run C:\BIOS_FOLDER>E5450A20.exe /s /f /r

Wait couple of seconds for operating system to restart.

That worked for me.

If you can't get to OS, try to make bootable USB stick (using e.g. Rufus) than copy BIOS file to the stick, boot from it and try the same procedure.

Just got off the phone with Dell. They said that there is no way to force the BIOS update if its the wrong type error. The only way to fix it (assuming the methods in this thread were already done) is to replace the motherboard (the BIOS chip).

I think running it in command line might work on older versions of the BIOS, but we were unable to get it to do anything via Command Line in Windows, or through the recovery (F12, update BIOS). It would not take any switches. In Windows it shows what others have posted saying not valid for this system, BIOS update failed. I don't know what to say for those that don't have them covered under warranty. I would still try to call and explain that this happened through no fault of your own.

Unfortunately this doesn't work for me. It says the BIOS is not valid for this system, BIOS update failed.

I opened up a case with Dell and they are saying they will have to replace the motherboard. Im trying to see if there is a switch/option to force the update even with the wrong system type. If so I will update and let everyone know.

One thing I forgot to mention: Make sure that you have allowed the downgrade to older BIOS versions in your BIOS settings.

@BliBlaBlub Just registered to say HUGE thank you for this instruction. Finally solved the problem.