Provides the option to backup your current firmware on USB (when flashing full/custom UEFI firmware). Automatically detects your device/board name, current firmware, and hardware write-protect state.Automatically downloads statically compiled 64-bit versions of chromium flashrom, cbfstool, and gbb_utility.Understanding the script What MrChromebox's Firmware Utility Script script does ? Source code and build scripts available on github.Built based on the latest coreboot upstream, rather than on the frozen source snapshot provided by Google.Updates for the Embedded Controller (EC) of some of the devices it supports, solving some bugs associated with other custom firmware.A UEFI implementation via the Tianocore coreboot payload.MrChromebox's firmware for Chromebooks and Chromeboxes has some differences compared to other third-party custom firmware, namely: See the Disabling the hardware write protection at the Firmware write protection.įlashing with MrChromebox's Firmware Utility Script Introduction to the firmware Note: With Linux kernel versions greater than 4.4, CONFIG_IO_STRICT_DEVMEM a new kernel security measure can make flashrom stop working, in that case you can try adding iomem=relaxed to your kernel parameters. Manually with flashrom, in this case you will need to obtain the firmware by yourself or to compile it from the coreboot sources ( official or Chromium OS fork).Use MrChromebox's Firmware Utility Script.There are several approaches for flashing a custom firmware: Cannot boot stock Chrome OS (you can install Arnold the Bat’s Chromium OS build and it should be possible to upgrade it to full blown Chrome OS with a script if the user desires).Dangerous, and has the potential to render a device unusable.Enables VMX in models in which it is not active by default.Removes the Developer Mode screen that some users find annoying.Allows the use of a UEFI coreboot payload (with MrChromebox's custom firmware).(Discuss in Talk:Chrome OS devices/Custom firmware) Why flash a custom firmware? Pros Reason: This topic on this page were moved out from the Chromebook page as it was too bloated, hard to navigate and follow, the page here is still needs a little more work to stand by it own and we can probably move out a little more details from the Chromebook page to avoid duplicates, anyone who create hot links in other pages to specific topics in this page should be aware that some topics' headers might be change.
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