Eve Pixelbook cannot access '/dev/ttyUSB*': No such file or directory

Support
1

Currently trying to disable Firmware write protection on my Eve Pixelbook 2017 by following the guide on mrchromebox.tech. I have successfully enabled CCD (when I do gsctool -a -I I get State: Opened). I have my suzyqable that I bought from eBay plugged into the upper left usbc port in the only orientation that registers cr50 on my Mac. The board is plugged into a data transferring usbc to usbc cable and the other end connected into my Mac. My Mac has accessories set to always allow.

When I go into the vt-2 terminal on my Pixelbook and look into dev there are no ttyUSB’s. Only one file called tty. When I look inside dev on my Mac there is no mention of a usb. I’ve tried all types of cables in all different orientations Including using a usbc to a adapter in between my Chromebook and Mac I’m just not sure what the problem is anymore. I have a MacBook and a windows laptop but no Linux devices.

Trying “echo “wp false” > /dev/ttyUSB0” on my Mac gets me

zsh: operation not permitted: /dev/ttyUSB0

Trying the same on my Chromebook yields no errors but when I do “crossystem wpsw_cur” I get 1 instead of 0.

Any Ideas? Also, if I do end up solving this I was also wondering what Linux distro and gui would be best for my Chromebook? I have the i5 and 8 gigs of ram but I’m thinking I’ll try and use the laptop as a server so whatever is lightest I guess.

2

macos doesn’t have cr50 drivers, and also usb serial device names are different. You need to connect the non-chromebook end to a different device running linux.

3

Can I use a windows laptop with wsl?

4

Someone made a windows program to do it but I have no idea how well it works 🔌 CR50 CCD Shell Access on Windows (Now Possible!)

5

I’ll give that a shot in a bit. In the meantime what district and interface would you use? I’m not a massive Linux guy so I’m not the most familiar

6

Unfortunately there is basically no documentation on what any of the shell commands do for this tool. I have it connected to my Chromebook but don’t know how to use it to disable wp from there. Normal Linux commands don’t seem to work.

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Actually I tried wp disable and now when I do crossystem wpsw_cur I get 0 instead of 1 so I’m guessing it was successful