issue with dell latitude 5480 bios rewrite

[reverendalc]

Re: issue with dell latitude 5480 bios rewrite

i believe i've identified and corrected an issue with my programmer. i have since reprogrammed a T460S with a couple reads/writes, all successful.

i am now able to consistently read/write to this dell

i have tried five different dumps though, and they all spin the fans and shut down

anybody?

[SMDFlea]

Re: issue with dell latitude 5480 bios rewrite

This one should be ok .

[reverendalc]

Re: issue with dell latitude 5480 bios rewrite

all of my other dumps will power on the laptop with black screen and fan spin.

this bios does not respond to power button \-;

[reverendalc]

Re: issue with dell latitude 5480 bios rewrite

i took this BIOS and ran MEinject on it, and it does light up the power LED and spin the fans now

also i notice that the LCD is turning on... no backlight, but LCD gets darker, before it cuts off

[SMDFlea]

Re: issue with dell latitude 5480 bios rewrite

bios and ec. LA-E081P UMA .

[reverendalc]

Re: issue with dell latitude 5480 bios rewrite

are those the same files as in post #16 in this thread:
https://www.badcaps.net/forum/showthread.php?p=870544

i tried writing the other EC, but the laptop won't even spin fans with that EC written. i'll try this one after work today.

thanks!

[reverendalc]

Re: issue with dell latitude 5480 bios rewrite

ok, i couldn't wait until after work. i wrote the bios and the EC, and these results:

connect power, power LED comes on
no response to power button
LCD comes on (no backlight)
after some time, fan spin
fans/lights off
power LED back on, but no activity

[SMDFlea]

Re: issue with dell latitude 5480 bios rewrite

Try booting with and without known good ram .

[reverendalc]

Re: issue with dell latitude 5480 bios rewrite

without RAM, i get the yellow power LED. with ram, i get the white one.

[emaghanim]

Re: issue with dell latitude 5480 bios rewrite

100% tested work dell 5480 la e081p bios