ChromiumOS Enhanced Special Build – R78-12499.B

New Special Builds out today!

Download 64 bit build from

SHA256: 42a902efc679aa9fda9398a60a08616c96348de3a445ed8d4f490fdd05ffe933


  • HID Sensors framework support enabled
  • Thunderbolt support
  • Apple SMC (Motion sensor, light sensor, keyboard backlight)
  • Realtek rtl8192e wireless support
  • Realtek rtl8712 wireless support
  • Realtek rtl8723bs wireless support
  • Additional SOC sound card support
  • Realtek rtl8188EU Wireless support
  • Added in MediaTek MT7601U support
  • Added in all 4.14 kernel supported Marvell Wireless cards
  • Switched back to Intel IWL7K Wireless drivers
  • Added in brcm80211 drivers and removed old BroadCom STA driver

Note: Google Play Store is still not working!
The Google assistant does not work.
Known Issues:
Change Log:

The Update Server will be made available in the next week or so.

15 thoughts on “ChromiumOS Enhanced Special Build – R78-12499.B”

  1. I am using an HP stream with Celeron N3060 + iGPU ..
    If I boot and touch nothing, It gets stuck at boot logo forever…but if I touch the touchpad it works and I get to the login screen…

    is this the way it should be ? or is there a problem ?

  2. Hey Arnold (see what i did there) i’m at the end of the road here and wouldnt mind a tip. Ive tried your builds, cloudready, and linux, on all of them most things work but on none of them all things work. at the minute im trying cloudready but need to get a realtek driver installed, but i cant even log in without wifi and the usb adaptor i have also doesnt work. its showing up on cloudready chronos lspci as an rts5129 but on every other distro its showing as a rtl8723b which you have graciously included in your builds. is there any way i can shove this driver onto cloudready over usb using the shell?

  3. which version do you recommend ?
    Name of the product
    HP Notebook PC – 15-ba003nt (ENERGY STAR)
    AMD Quad Core A8-7410 APU (2.2 GHz, up to 2.5 GHz, 2 MB cache)
    Memory, standard
    4 GB DDR3L-1600 SDRAM (1 x 4 GB)
    Video Graphics
    AMD Radeon ™ R5 M430 Graphics Card (2 GB DDR3 dedicated)
    Hard Drive
    500 GB 5400 rpm SATA
    Optical driver
    SuperMulti DVD burner
    39.6 cm (15.6 “) diagonal HD SVA BrightView WLED with backlight (1366 x 768)
    Full-size island-type keyboard with integrated numeric keypad
    Pointing device
    Touchpad with support for multi-touch gestures
    Wireless Connectivity
    802.11b / g / n (1×1) and Bluetooth® 4.0 combination (Miracast compatible)
    Network interface
    Integrated 10/100 BASE-T Ethernet LAN
    Expansion slots
    1 multi-format SD media card reader
    External Ports
    1 HDMI; 1 headset / microphone unified; 2 USB 2.0; 1 USB 3.0; 1 RJ-45
    Minimum dimensions (W x D x H)
    38.43 x 25.46 x 2.43 cm
    2.04 kg
    Power supply type
    65W AC power adapter
    HP TrueVision HD Camera with integrated digital microphone
    Audio features
    DTS Studio Sound ™; Dual speaker

  4. Tried this special image and the latest nightly on a Surface Pro 3, however the display stays on “Booting `local image A'”, though I know it boots and launches Chrome because I hear the login screen sound being played.

    Any suggestions?

  5. quite problematic chromeos distro: usb boots fine and I can use it.
    then I install it on the HDD: boots but stuck on “chromium” logo

    yoga 11e (windows not chromebook)

  6. Arnold, I do not see x86-64 build images in the archives after about v60, where as the amd-64 are upto v78.

    Where can I find x86-64 v78 of your build?

    Also the enhanced and vanilla builds are all tagged with amd-64. How do I get the x86-64 flavour?

  7. Hi Arnold, how can I enable login using PIN. I set it in setting but PIN option is not there on login screen.

  8. Hi Arnold,
    With the change in the iwlwifi driver, in this special R78 release support for this card:
    09:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 1030 [Rainbow Peak] [8086:008b] (rev 34)
    Subsystem: Intel Corporation Centrino Wireless-N 1030 BGN [8086:5315]
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi, wl
    appears to have dropped.
    Note this is the lspci -knn output for the card on the prior R76 special release. Doing a modprobe of the driver on your R78 fails to find the device too.

  9. I installed it on a laptop without problems, and on the desktop three problems.

    1) Before installation
    bash: warning: /home/chronos/user/.bash_profile: warning: script from noexec mount; see
    bash: warning: /home/chronos/user/.bashrc: warning: script from noexec mount; see

    2) When running the installation script
    cros-disks stop/waiting
    Error: src and dst are the same: /dev/sda = /dev/sda
    3) After pressing off, the screen goes blank but the computer is working

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