On the main menu of the ChromeOS Firmware Utility Script, options will be available to restore either the stock BOOT_STUB firmware or the full stock firmware, depending on your device and type of firmware it is currently running. Open a terminal window, then copy the URL to download/run the Firmware Utility Script and paste into the terminal window, then hit enter:Ĭd curl -LO & sudo bash firmware-util.sh Regardless if you flashed your device with BOOT_STUB firmware, or a Legacy boot or UEFI Full ROM firmware, the easiest way to restore the stock firmware is with MrChromebox's ChromeOS Firmware Utility Script. NOTE: if you used chrx to install GalliumOS, or only updated your device's RW_LEGACY firmware, then skip ahead to the next section as your device is still running the stock/factory firmware. If you flashed your ChromeOS device's firmware to install GalliumOS, you may have to restore the stock firmware before resetting ChromeOS. This is a fairly simple operation as long as you read, understand, and follow the procedure below. 1.3 Resetting the Firmware Boot Flags (GBB Flags)Īt some point, you may wish to return your Chromebook to its original factory state.
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