Unable to Enable Developer Mode on MDM-Enrolled Asus Chromebox 3 (CN65)

Support General Device Support
1

System Details

  • Device: Asus Chromebox 3 (CN65) TEEMO
  • OS: ChromeOS
  • Firmware Type: Stock
  • Internal storage type: NVMe

Summary of the Issue

I have an ASUS Chromebox 3 that is currently MDM-enrolled. I can access Recovery Mode without any issues, but I can’t enable Developer Mode. Pressing Ctrl+D at the recovery screen does nothing, even though this model appears to be supported.

I’ve also tried performing a Powerwash (both before and after signing in) following the note in the tutorials ( Developer Mode | MrChromebox.tech ), but the result is always the same: nothing happens in recovery mode.

(edit) I also opened the device and removed the WP screw properly, following the images provided.

Is the MDM enrollment preventing Developer Mode from being enabled, or is there another step I’m missing? Has anyone successfully enabled Developer Mode on this hardware while it was enrolled?

Thank you so much to anyone willing to help! Any advice would be appreciated!

Steps to Reproduce

  1. Enter recovery mode

  2. Press Control + D, nothing happens

2

MDM can prevent Developer Mode being enabled, and that’s the default option IIRC.

the workaround is to treat the device as bricked and flash with a USB programmer as per the instructions on my site. A SuzyQ doesn’t work here as MDM will lock out the CCD programming interface. Be sure to preserve the MAC and HWID.