Lenovo T480S

[shiyab]

I have a lenovo T480s, When turning the Laptop on, it plays a beep melody.
Board: ET481 NM-B471 rev 1.0
Laptop: Lenovo T480s
Type: 20L8-CT01WW
SN: PC-0VVS91 18/06
Could someone help me getting my dump cleaned?
Thank you!

hi try

[hoaca388]

I have a lenovo T480s, When turning the Laptop on, it plays a beep melody.
Board: ET481 NM-B471 rev 1.0
Laptop: Lenovo T480s
Type: 20L8-CT01WW
SN: PC-0VVS91 18/06
Could someone help me getting my dump cleaned?
Thank you!

T480s Laptop (ThinkPad) - Type 20L8

[Dzony83]

I have a Lenovo T480s that doesn't have an administrator password but has Autopilot. Is it possible to remove Autopilot?

Laptop: Lenovo T480s
Board: L1HF86M0033
SN: PC0W3XT8

Thank you!

[shiyab]

I have a Lenovo T480s that doesn't have an administrator password but has Autopilot. Is it possible to remove Autopilot?

Laptop: Lenovo T480s
Board: L1HF86M0033
SN: PC0W3XT8

Thank you!

hi try

[Maxpower3]

I have a Lenovo T480s that doesn't have an administrator password but has Autopilot. Is it possible to remove Autopilot?

Laptop: Lenovo T480s
Board: L1HF86M0033
SN: PC0W3XT8

Thank you!

here

[SMDFlea]

posts moved to t480s topic.

[SMDFlea]

I have a Lenovo T480s that doesn't have an administrator password but has Autopilot. Is it possible to remove Autopilot?

Laptop: Lenovo T480s
Board: L1HF86M0033
SN: PC0W3XT8

Thank you!

Read the rules and don`t post the same request in more than one thread in future please........ https://www.badcaps.net/forum/troubl...before-posting

[Dzony83]

hi try

It works perfectly.

Thank you very much!

I also tried the file from Maxpower3, and that BIOS works perfectly too. Thanks, Max!

To SMDFlea... My mistake. It won't happen again. I tried to delete the second post as soon as I put it up, but I couldn't. My apologies once again!

[rayrayrayraycat]

I have a T480s with an i7-8650u. I attempted to install Libreboot but ended up unable to boot the system. I also re-flashed my original BIOS backup but I think it's corrupt as the system still will not boot. Can someone help analyze my OEM BIOS backup?

Type: 20L8-S7NQ03
Motherboard: ET481 NM-B471
Rev 1.0 2017-10-30
Serial Number: PC0Y7QFU

[SMDFlea]

I have a T480s with an i7-8650u. I attempted to install Libreboot but ended up unable to boot the system. I also re-flashed my original BIOS backup but I think it's corrupt as the system still will not boot. Can someone help analyze my OEM BIOS backup?

Type: 20L8-S7NQ03
Motherboard: ET481 NM-B471
Rev 1.0 2017-10-30
Serial Number: PC0Y7QFU

try that bios https://www.badcaps.net/forum/troubl...53#post3662653

[rayrayrayraycat]

try that bios https://www.badcaps.net/forum/troubl...53#post3662653

Just flashed that BIOS. The laptop charge light, keyboard, and power button light up for about 1 second after plugging in power and then go dark. The power button isn't doing anything. Tried the reset button with no change. Am I cooked?

[rayrayrayraycat]

I have tried multiple Libreboot builds, my original BIOS backup, and the one linked above. With all of them I get the same symptom. The charge light comes on, power button/keyboard light up for 1 second and then go dark. I suspect I've run into the same issue described by monological in this thread --https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/108386-bricked-lenovo-t480s-need-help -- but I lack the hardware to confirm by testing the diode. I originally programmed with a GQ 4x4 programmer that may have overvolted the chip and I've since built a Pico based programmer as recommended by the Libreboot docs.

One additional detail to the symptom: when I plug in the power supply and see the lights go off after 1 second, I also observe the CPU fan spinning up and stopping every few seconds, almost like it's trying to boot up and failing. If I press the power button the fan stops. If anyone thinks I *haven't* fried the diode (or something worse) I would be happy to try again.