re-add C201 pages
Leah Rowe
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---
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title: ASUS Chromebook C201
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x-toc-enable: true
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...
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This page is absolete. Refer to these pages instead:
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* [C201 flashing instructions](../install/c201.md)
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* [Chromebook flashing instructions](../install/chromebooks.md)
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@ -64,7 +64,7 @@ libreboot currently supports the following systems in this release:
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- [Acer Chromebook 13 (CB5-311, C810) (nyan-big)](../install/chromebooks.md)
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- [ASUS Chromebit CS10 (veyron-mickey)](../install/chromebooks.md)
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- [ASUS Chromebook Flip C100PA (veyron-minnie)](../install/chromebooks.md)
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- [ASUS Chromebook C201PA (veyron-speedy)](../install/chromebooks.md)
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- [ASUS Chromebook C201PA (veyron-speedy)](../install/c201.md)
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- [Hisense Chromebook C11 and more (veyron-jerry)](../install/chromebooks.md)
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- [ASUS Chromebook Flip C101 (gru-bob)](../install/chromebooks.md)
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- [Samsung Chromebook Plus (v1) (gru-kevin)](../install/chromebooks.md)
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---
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title: ASUS Chromebook C201 installation guide
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...
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Introduction
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===========
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This page contains information about assembly and disassembly, for flashing
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the ASUS Chromebook C201 externally. It will also link to internal flashing
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instructions, and information about U-Boot.
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Flashrom
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--------
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A special fork of flashrom, maintained by Google, is required for flashing.
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More information about this is present in the generic [chromebook flashing
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instructions](chromebooks.md).
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Depthcharge payload (obsolete)
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------------------------------
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This board was also supported in Libreboot 20160907, with the Depthcharge
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payload. Support was dropped in later releases, and then re-added in the
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December 2022 release but with *u-boot* payload (not *depthcharge*).
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Refer to older versions of this page, in `lbwww.git`, if you wish to see
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instructions pertaining to Depthcharge:
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* <https://notabug.org/libreboot/lbwww/src/4be2eed23e11b1071cd500a329abf654ab25f942/site/docs/install/c201.md>
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* <https://notabug.org/libreboot/lbwww/src/4be2eed23e11b1071cd500a329abf654ab25f942/site/docs/hardware/c201.md>
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U-boot payload
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==============
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U-Boot was ported to coreboot CrOS devices, courtesy of Alper Nebi
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Yasak (`alpernebbi` on Libreboot IRC).
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Read the section pertaining to U-boot payload:
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[u-boot payload documentation for Libreboot](../uboot/)
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Internal flashing
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=================
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External flashing is possible, but only necessary in the event of a *brick*.
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If you're flashing good firmware, and the machine boots properly, you can
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do it in software, from the host CPU.
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In the past, C201 was the only CrOS device so this page contained information
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about internal flashing. Libreboot now supports many more CrOS devices, so
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the information has moved.
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See: [chromebook flashing instructions](chromebooks.md)
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Write-protect screw
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-------------------
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The chromebook flashing instructions, linked above, refer to a *screw* that
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can be turned, to disable flash protection. This is necessary, for internally
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flashing the C201. This section will tell you how to access that screw.
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To access the screw, the device has to be opened. There are 8 screws to remove
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from the bottom of the device, as shown on the picture below. Two are hidden
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under the top pads. After removing the screws, the keyboard plastic part can be
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carefully detached from the rest. Beware: there are cables attached to it! It
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is advised to flip the keyboard plastic part over, as shown on the picture
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below. The write protect screw is located next to the SPI flash chip, circled
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in red in the picture below. It has to be removed. Refer to the following
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photos:
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[](https://av.libreboot.org/c201/screws.jpg)
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[](https://av.libreboot.org/c201/wp-screw.jpg)
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The write protect screw can be put back in place later, when the device
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is known to be in a working state.
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External flashing
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=================
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If the machine is no longer booting, due to bad firmware, you can unbrick
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it externally. Refer to [external flash instructions](spi.md).
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[](https://av.libreboot.org/c201/spi-flash-layout.jpg)
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[](https://av.libreboot.org/c201/battery-connector.jpg)
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You do not need to correct the `WP#` pin because it is held high via pull-up
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resistor to 3.3v, when the write-protect screw is loosened (when tightened,
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the screw grounds this pin; the pull-up resistor is to prevent a dead short).
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You must remove the battery, prior to flashing. The connector is shown in
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the 2nd photo, above (the big black connector, with the black, green, yellow,
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white and red wires going into it). Simply unplug that.
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@ -7,6 +7,16 @@ This page attempts to give a brief, general overview of how to flash
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custom firmware on ChromeOS devices. This guide usually refers to all of
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them as "Chromebook"s since it's the most common form factor.
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Flashrom
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========
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A special fork of flashrom, maintained by Google, is required for flashing
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these Chromebook devices. See:
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<https://chromium.googlesource.com/chromiumos/third_party/flashrom/>
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You must then compile this from source, and run it.
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Enable ChromeOS "Developer Mode"
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================================
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@ -147,6 +157,17 @@ To flash the entire ROM image internally, run within ChromeOS:
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If you can already boot a conventional Linux distro on your Chromebook,
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you may be able to use `flashrom -p linux_mtd` on that system instead.
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Install an operating system
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===========================
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Libreboot currently lacks any good documentation about this, but there
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is this page which refers to Debian:
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[Debian installation](https://wiki.debian.org/InstallingDebianOn/Asus/C201)
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In general, ARM-compatible distros targeting U-boot can be used. You can
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follow their instructions, once you have Libreboot up and running.
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See also
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========
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