Lenovo chromebook 100e gen 4- write protection disable?

It appears that the device’s WP method is via unplugging the battery. The only possible reason that the device’s WP is not getting disabled is because there may be something wrong with the device itself or you might be doing something wrong.

I also see that someone has managed to disable write protect using this method in this question’s threads (@Nde_Tayne ). The device codename is rusty and the board it is using is called corsola.(Just in case you want to research potential problems.)

yeah i know something’s wrong with it.

Potential troubleshooting options:
Powerwashing the device
Exiting and re-entering developer mode.

I am not sure but it could also be because the device is managed by an organization school or parent but with those protections enabled you shouldn’t even be able to enter developer mode.

it is not managed by anyone, i am in dev mode as well

Hey @techrak - try this:

I was able to do it without a suzyQ cable. I did the following while the battery was still connected:

Enter dev mode
sudo gsctool -a -o
Press PP when prompted
Re-enter dev mode
sudo gsctool -a -I AllowUnverifiedRo:always
^ Above is a capital i
Press PP when prompted
sudo gsctool -a -w disable
Press PP when prompted
Reboot

Yo, I have that same model and desperately need help. Here is an image of the inside components if that helps anything

According to the above posts this device uses the Cr50 wp disable method so y can follow these instructions:
Remove the bottom of the laptop and disconnect the battery.
Plug the charger or AC adapter into the port and LEAVE THE BATTERY DISCONNECTED.
Power the device on and make sure you are in developer mode.
Enter the VT-2 shell by pressing CTRL+ALT+F2
Login as chronos and type sudo -i
Type flashrom --wp-disable
Once its done then you can reconnect the battery and close the device up.

As far as I know the firmware script DOES NOT support arm devices. I can’t garantee it’ll work.

I know all of this was over a year ago but did did anyone find some sort of resolution? Just got this exact Chromebook and have been fighting what seems like a losing battle since, any input very much appreciated. thanks guys

There are directions in this thread and in the docs

How exactly would I power wash the device?

sudo gsctool -a -w disable

and it gave me:

Error: CCD info version incorrect (0)

Cr50 does not support this operation

Am I dumb?

or do I have an enrolled chromebook, cause im kind of iffy if mine acually is (its complicated)

What is your device?

It is a lenovo 100e gen 3.

So why are you replying here? This thread is on a different device. 100e G3 uses the battery for write protection. Iirc, there’s an arm version as well so board name would be more useful.

With the Gen3 you have to use a paperclip to bridge the pen hole before going into Dev mode.

What on earth is the pen hole?

Sorry… I meant to say pin hole. The physical jumper on the motherboard. G4 got rid of the physical jumper and is using a H1 security chip. But on the G3 if you undo a paperclip and put the ends in the pinholes (jumper) it will allow you to disable the WP. Once you are done you can take the paperclip out and reboot back into secure mode.

Depends if they have AMD or Intel version. intel (bookem) uses a jumper, amd (vilboz) uses the battery

where is the pin hole? Im dumb :slight_smile: